Table of Contents
- About this documentation
- Chapter 1. Meet your computer
- Chapter 2. Get started with your computer
- Chapter 3. Explore your computer
- Chapter 4. Secure your computer and information
- Chapter 5. UEFI BIOS
- What is UEFI BIOS
- Enter the BIOS menu
- Navigate in the BIOS interface
- Change the display language of UEFI BIOS
- Set the system date and time
- Change the startup sequence
- Enable or disable the configuration change detection feature
- Enable or disable the automatic power-on feature
- Enable or disable the smart power-on feature
- Enable or disable the ErP LPS compliance mode
- Enable or disable the ICE thermal alert feature
- Change the ICE performance mode
- Change BIOS settings before installing a new operating system
- Update UEFI BIOS
- Recover from a BIOS update failure
- Clear CMOS
- Chapter 6. Troubleshooting, diagnostics, and recovery
- Chapter 7. CRU replacement
- Chapter 8. Help and support
- Appendix A. Important safety information
- Appendix B. Accessibility and ergonomic information
- Appendix C. Compliance and TCO Certified information
- Appendix D. Notices and trademarks
Lenovo M90n-1 Nano User Manual
Displayed below is the user manual for M90n-1 Nano by Lenovo which is a product in the PCs/Workstations category. This manual has pages.
Related Manuals
M90n-1
User Guide
Read this first
Before using this documentation and the product it supports, ensure that you read and understand the
following:
• Appendix A “Important safety information” on page 51
• Safety and Warranty Guide
• Setup Guide
Second Edition (May 2020)
© Copyright Lenovo 2019, 2020.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-
35F-05925.
Contents
About this documentation . . . . . . . . iii
Chapter 1. Meet your computer . . . . . 1
Top . . . . . . . . . . . . . . . . . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Rear . . . . . . . . . . . . . . . . . . . . 2
Bottom . . . . . . . . . . . . . . . . . . . 3
System board . . . . . . . . . . . . . . . . 4
Features and specifications . . . . . . . . . . . 5
Statement on USB transfer rate . . . . . . . . 5
Chapter 2. Get started with your
computer . . . . . . . . . . . . . . . . . 7
Get started with Windows 10 . . . . . . . . . . 7
Windows account . . . . . . . . . . . . . 7
Windows user interface . . . . . . . . . . . 8
Connect to networks . . . . . . . . . . . . . . 9
Connect to the wired Ethernet . . . . . . . . 9
Connect to Wi-Fi networks (for selected
models) . . . . . . . . . . . . . . . . . 9
Use Lenovo Vantage . . . . . . . . . . . . . . 9
Use multimedia . . . . . . . . . . . . . . . 10
Use audio . . . . . . . . . . . . . . . 10
Chapter 3. Explore your computer . . 11
Manage power . . . . . . . . . . . . . . . 11
Set power button behaviors . . . . . . . . 11
Set the power plan . . . . . . . . . . . . 11
Transfer data . . . . . . . . . . . . . . . . 11
Connect to a Bluetooth-enabled device (for
selected models) . . . . . . . . . . . . 11
Purchase accessories . . . . . . . . . . . . 12
Chapter 4. Secure your computer
and information . . . . . . . . . . . . 13
Lock the computer . . . . . . . . . . . . . 13
Use passwords . . . . . . . . . . . . . . . 13
Use software security solutions. . . . . . . . . 14
Use firewalls . . . . . . . . . . . . . . 14
Use antivirus programs . . . . . . . . . . 15
Use computrace Agent software embedded in
firmware (for selected models) . . . . . . . 15
Use BIOS security solutions . . . . . . . . . . 15
Erase all storage drive data . . . . . . . . 15
Use the cover presence switch . . . . . . . 16
Use Smart USB Protection. . . . . . . . . 16
Chapter 5. UEFI BIOS . . . . . . . . . 17
What is UEFI BIOS. . . . . . . . . . . . . . 17
Enter the BIOS menu. . . . . . . . . . . . . 17
Navigate in the BIOS interface . . . . . . . . . 17
Change the display language of UEFI BIOS . . . . 17
Set the system date and time . . . . . . . . . 18
Change the startup sequence . . . . . . . . . 18
Enable or disable the configuration change
detection feature . . . . . . . . . . . . . . 18
Enable or disable the automatic power-on
feature . . . . . . . . . . . . . . . . . . 19
Enable or disable the smart power-on feature . . . 19
Enable or disable the ErP LPS compliance mode . . 19
Enable or disable the ICE thermal alert feature . . . 20
Change the ICE performance mode . . . . . . . 20
Change BIOS settings before installing a new
operating system . . . . . . . . . . . . . . 20
Update UEFI BIOS. . . . . . . . . . . . . . 21
Recover from a BIOS update failure . . . . . . . 21
Clear CMOS . . . . . . . . . . . . . . . . 22
Chapter 6. Troubleshooting,
diagnostics, and recovery . . . . . . . 23
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 23
Troubleshooting . . . . . . . . . . . . . . 23
Startup problems . . . . . . . . . . . . 24
Audio problems . . . . . . . . . . . . . 25
Network problems . . . . . . . . . . . . 25
Performance problems . . . . . . . . . . 28
Storage drive problems . . . . . . . . . . 29
Serial connector problems . . . . . . . . . 29
USB device problems . . . . . . . . . . 29
Software problems. . . . . . . . . . . . 30
Lenovo diagnostic tools . . . . . . . . . . . 30
Recovery . . . . . . . . . . . . . . . . . 30
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 30
Restore your files from a backup . . . . . . 30
Reset your computer . . . . . . . . . . . 30
Use advanced options . . . . . . . . . . 31
Windows automatic recovery. . . . . . . . 31
Create and use a recovery USB device . . . . 31
Update the device driver . . . . . . . . . 32
Chapter 7. CRU replacement . . . . . 33
What are CRUs . . . . . . . . . . . . . . . 33
Replace a CRU . . . . . . . . . . . . . . . 33
Power adapter and power cord . . . . . . . 34
© Copyright Lenovo 2019, 2020 i
DIN rail bracket . . . . . . . . . . . . . 35
Power adapter bracket . . . . . . . . . . 36
VESA mount bracket . . . . . . . . . . . 39
Rear Wi-Fi antenna. . . . . . . . . . . . 41
Bottom cover . . . . . . . . . . . . . . 42
Wi-Fi card . . . . . . . . . . . . . . . 43
M.2 solid-state drive . . . . . . . . . . . 45
Chapter 8. Help and support . . . . . 47
Self-help resources . . . . . . . . . . . . . 47
Call Lenovo . . . . . . . . . . . . . . . . 48
Before you contact Lenovo . . . . . . . . 48
Lenovo Customer Support Center . . . . . . 48
Purchase additional services. . . . . . . . . . 49
Appendix A. Important safety
information . . . . . . . . . . . . . . . 51
Appendix B. Accessibility and
ergonomic information . . . . . . . . 65
Appendix C. Compliance and TCO
Certified information . . . . . . . . . . 69
Appendix D. Notices and
trademarks . . . . . . . . . . . . . . . 81
ii M90n-1 User Guide
About this documentation
• Illustrations in this documentation might look different from your product.
• Depending on the model, some optional accessories, features, and software programs might not be
available on your computer.
• Depending on the version of operating systems and programs, some user interface instructions might not
be applicable to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to:
https://pcsupport.lenovo.com
• Microsoft® makes periodic feature changes to the Windows® operating system through Windows Update.
As a result, some information in this documentation might become outdated. Refer to Microsoft resources
for the latest information.
© Copyright Lenovo 2019, 2020 iii
iv M90n-1 User Guide
Chapter 1. Meet your computer
Top
1. ThinkCentre® LED This indicator is on when the computer is on.
Front
1. Power button
Press to turn on the computer.
To turn off the computer, open the Start menu, click Power, and then select
Shut down.
2. USB-C™ connector (USB 3.1
Gen 2)
• Output voltage and current of 5 V and 0.9 A.
• Transfer data at USB 3.1 speed, up to 10 Gbps.
• Connect to USB-C accessories to help expand your computer functionality. To
purchase USB-C accessories, go to https://www.lenovo.com/accessories.
3. USB 3.1 connector Gen 2 Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
4. USB 3.1 connector Gen 2 Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
5. Headset connector Connect a headset or headphones to your computer.
© Copyright Lenovo 2019, 2020 1
Rear
1. Power adapter connector Connect the power adapter to your computer for power supply.
2. DisplayPort 1.2 out connector
Send audio and video signals from the computer to another audio or video device,
such as a high-performance monitor. For more information, see https://
www.vesa.org/wp-content/uploads/2010/12/DisplayPort-DevCon-Presentation-DP-
1.2-Dec-2010-rev-2b.pdf.
3. USB 3.1 connector Gen 2 Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
4. USB-C connector (USB 3.1
Gen 2)
• Output voltage and current of 5 V and 0.9 A.
• Transfer data at USB 3.1 speed, up to 10 Gbps.
• Connect to an external display:
– USB-C to VGA: 1900 x 1200 pixels, 60 Hz
– USB-C to DP: 3840 x 2160 pixels, 60 Hz
• Connect to USB-C accessories to help expand your computer functionality. To
purchase USB-C accessories, go to https://www.lenovo.com/accessories.
5. USB 3.1 connector Gen 2
Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer. This connector supports the smart power-on
feature. For more information, see “Enable or disable the smart power-on feature”
on page 19.
6. Ethernet connector
Connect to a local area network (LAN). When the green indicator is on, the
computer is connected to a LAN. When the yellow indicator blinks, data is being
transmitted.
7. Security-lock slot Lock your computer to a desk, table, or other fixtures through a Kensington-style
cable lock.
8. Wi-Fi antenna slot *
Used to install the rear Wi-Fi antenna cable connector that is available only on
some models. The rear Wi-Fi antenna is installed on the rear Wi-Fi antenna cable
connector.
* for selected models
2M90n-1 User Guide
System board
1 Microprocessor fan connector 2 Clear CMOS (Complementary Metal Oxide
Semiconductor) / Recovery jumper
3 Coin-cell battery connector 4 Internal speaker connector
5 M.2 solid-state drive slot 1 (for M.2 TG solid-state
drive)
6 M.2 solid-state drive slot 2 (for M.2 SATA solid-state
drive)
7 Wi-Fi card slot 8 Cover presence switch connector (intrusion switch
connector)
4M90n-1 User Guide
Features and specifications
Hardware configuration
1. Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or provide
confirmation if prompted.
Power supply 65-watt automatic voltage-sensing power adapter
Electrical input • Input voltage: From 100 V ac to 240 V ac
• Input frequency: 50/60 Hz
Microprocessor To view the microprocessor information of your computer, right-click the Start
button and then click System.
Memory Double data rate 4 (DDR4) synchronous dynamic random-access memory module
(SDRAM), soldered on the system board
Storage device
M.2 solid-state drive
To know the storage drive capacity:
1. Right-click the Start button to open the Start context menu.
2. Click Disk Management.
Note: The storage drive capacity indicated by the system is less than the nominal
capacity.
Video features DisplayPort 1.2 out connector
Audio features
The integrated audio card supports the following:
• Headset connector
• Internal speaker*
Expansion M.2 solid-state drive slots (2)
Network features
• Bluetooth*
• Ethernet LAN
• Wireless LAN*
* for selected models
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB device Data rate (Gbit/s)
3.2 Gen 1 / 3.1 Gen 1 5
3.2 Gen 2 / 3.1 Gen 2 10
3.2 Gen 2 × 2 20
Chapter 1.Meet your computer 5
6M90n-1 User Guide
Chapter 2. Get started with your computer
Get started with Windows 10
Learn the basics of Windows 10 and start working with it right away. For more information about Windows
10, see the Windows help information.
Windows account
A user account is required to use the Windows operating system. It can either be a Windows user account or
a Microsoft account.
Windows user account
When you start Windows for the first time, you are prompted to create a Windows user account. This first
account you created is of the “Administrator” type. With an Administrator account, you can create additional
user accounts or change account types by doing the following:
1. Open the Start menu and select Settings ➙ Accounts ➙ Family & other users.
2. Follow the on-screen instructions.
Microsoft account
You can also log in to the Windows operating system with a Microsoft account.
To create a Microsoft account, go to the Microsoft sign-up page at https://signup.live.com and follow the on-
screen instructions.
With a Microsoft account, you can:
• Enjoy one-time signing in if you are using other Microsoft services, such as OneDrive, Skype, and Outlook.
com.
• Sync personalized settings across other Windows-based devices.
© Copyright Lenovo 2019, 2020 7
Windows user interface
1. Account Change account settings, lock the computer, or sign out from the current account.
2. Documents Open the Documents folder, a default folder to save your received files.
3. Pictures Open the Pictures folder, a default folder to save your received pictures.
4. Settings Launch Settings.
5. Power Shut down, restart, or put the computer into sleep mode.
6. Start button Open the Start menu.
7. Windows Search Type what you are looking for in the search box and get search results from your
computer and the Web.
8. Task View Display all opened apps and switch among them.
9. Windows notification area Display notifications and status of some features.
10. Battery status icon Display power status and change battery or power settings. When your computer
is not connected to ac power, the icon changes to .
11. Network icon Connect to an available wireless network and display the network status. When
connected to a wired network, the icon changes to .
12. Action center Display the latest notifications from apps and provide quick access to some
features.
Open the Start menu
• Click the Start button.
• Press the Windows logo key on the keyboard.
Open the Start context menu
Right-click the Start button.
8M90n-1 User Guide
Access Control Panel
• Open the Start menu and click Windows System ➙ Control Panel.
• Use Windows Search.
Launch an app
• Open the Start menu and select the app you want to launch.
• Use Windows Search.
Connect to networks
Your computer helps you connect to the world through a wired or wireless network.
Connect to the wired Ethernet
Connect your computer to a local network through the Ethernet connector on your computer with an
Ethernet cable.
Connect to Wi-Fi networks (for selected models)
If your computer includes a wireless LAN module, you can connect your computer to Wi-Fi® networks. The
wireless LAN module on your computer may support different standards. For some countries or regions, use
of 802.11ax may be disabled according to local regulations.
1. Click the network icon in the Windows notification area. A list of available wireless networks is displayed.
2. Select a network available for connection. Provide required information, if needed.
Use Lenovo Vantage
The preinstalled Lenovo Vantage is a customized one-stop solution to help you maintain your computer with
automated updates and fixes, configure hardware settings, and get personalized support.
Access Lenovo Vantage
Open the Start menu and click Lenovo Vantage. You also can type Lenovo Vantage in the search box.
To download the latest version of Lenovo Vantage, go to Microsoft Store and search by the app name.
Key features
Lenovo Vantage enables you to:
• Know the device status easily and customize device settings.
• Download and install UEFI BIOS, firmware and driver updates to keep your computer up-to-date.
• Monitor your computer health, and secure your computer against outside threats.
• Look up warranty status (online).
• Access User Guide and helpful articles.
Notes:
Chapter 2.Get started with your computer 9
• The available features vary depending on the computer model.
• Lenovo Vantage makes periodic updates of the features to keep improving your experience with your
computer. The description of features might be different from that on your actual user interface.
Use multimedia
Use your computer for business or entertainment with the devices (such as a camera, a monitor, or
speakers).
Use audio
To enhance the audio experience, connect speakers, headphones, or a headset to the audio connector.
Adjust the volume
1. Click the volume icon in the Windows notification area on the taskbar.
2. Follow the on-screen instructions to adjust the volume. Click the speaker icon to mute the audio.
Change the sound settings
1. Go to Control Panel and view by category.
2. Click Hardware and Sound ➙ Sound.
3. Change the settings as you prefer.
10 M90n-1 User Guide
Chapter 3. Explore your computer
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
Set power button behaviors
You can define what the power button does according to your preference. For example, by pressing the
power button, you can turn off the computer or put the computer to sleep or hibernation mode.
To change what the power button does:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options ➙ Choose what the power buttons do.
3. Change the settings as you prefer.
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have
been idle for a specified duration:
Table 1. Default power plan (when plugged into ac power)
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 10 minutes
To awaken the computer from Sleep mode, press any key on your keyboard.
To reset the power plan to achieve the best balance between performance and power saving:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options, and then choose or customize a power plan of your preference.
Transfer data
Quickly share your files using the built-in Bluetooth technology among devices with the same features. You
also can install a disc or media card to transfer data.
Connect to a Bluetooth-enabled device (for selected models)
You can connect all types of Bluetooth-enabled devices to your computer, such as a keyboard, a mouse, a
smartphone, or speakers. To ensure that the connection is successful, place the devices 10 meters (33 feet),
at most, from the computer.
1. Turn on Bluetooth on the computer.
a. Open the Start menu, and then click Settings ➙ Devices ➙ Bluetooth & other devices.
b. Turn on the Bluetooth switch.
2. Click Add Bluetooth or other device ➙ Bluetooth.
3. Select a Bluetooth device, and then follow the on-screen instructions.
© Copyright Lenovo 2019, 2020 11
Your Bluetooth device and computer will automatically connect the next time if the two devices are in range
of each other with Bluetooth turned on. You can use Bluetooth for data transfer or remote control and
communication.
Purchase accessories
Lenovo has a number of hardware accessories and upgrades to help expand the capabilities of your
computer. Options include memory modules, storage devices, network cards, power adapters, keyboards,
mice, and more.
To shop at Lenovo, go to https://www.lenovo.com/accessories.
There are some tutorial videos that introduce how to use your computer with some accessories, such as
ThinkCentre Nano TIO Cube and ThinkCentre Tiny/Nano Monitor Clamp II.
https://support.lenovo.com/solutions/nanofeaturevideo
12 M90n-1 User Guide
Chapter 4. Secure your computer and information
Lock the computer
Note: You are responsible for evaluating, selecting, and implementing the locking device and security
feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance
of the locking device and security feature. You can purchase computer locks from Lenovo.
Kensington-style cable lock
Lock your computer to a desk, table, or other fixtures through a Kensington-style cable lock.
Use passwords
Password types
You can set the following passwords in UEFI (Unified Extensible Firmware Interface) BIOS (Basic Input/
Output System) to prevent unauthorized access to your computer. However, you are not prompted to enter
any UEFI BIOS password when your computer resumes from sleep mode.
• Power-on password
When a power-on password is set, you are prompted to enter a valid password each time the computer is
turned on. The computer cannot be used until the valid password is entered.
• Supervisor password
Setting a supervisor password deters unauthorized users from changing configuration settings. If you are
responsible for maintaining the configuration settings of several computers, you might want to set a
supervisor password.
When a supervisor password is set, you are prompted to enter a valid password each time you try to enter
the BIOS menu.
© Copyright Lenovo 2019, 2020 13
If both the power-on password and supervisor password are set, you can enter either password.
However, you must use your supervisor password to change any configuration settings.
• Hard disk password
Setting a hard disk password prevents unauthorized access to the data on the storage drive. When a hard
disk password is set, you are prompted to enter a valid password each time you try to access the storage
drive.
Note: After you set a hard disk password, your data on the storage drive is protected even if the storage
drive is removed from one computer and installed in another.
• System management password (for selected models)
You can enable the system management password to have the same authority as the supervisor
password to control security related features. To customize the authority of the system management
password through the UEFI BIOS menu:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ System Management Password Access Control.
3. Follow the on-screen instructions.
If you have set both the supervisor password and the system management password, the supervisor
password overrides the system management password.
Set, change, and remove a password
Before you start, print these instructions.
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security.
3. Depending on the password type, select Set Supervisor Password, Set Power-On Password, Set
System Management Password, or Hard Disk Password and press Enter.
4. Follow the on-screen instructions to set, change, or remove a password.
5. Press F10 or Fn+F10 to save the changes and exit.
You should record your passwords and store them in a safe place. If you forget the passwords, see “Clear
CMOS” on page 22 to remove them by yourself. You can also contact a Lenovo-authorized service provider
to have the passwords removed.
Notes:
• If the supervisor password is forgotten, it might not be removed by clearing CMOS depending on your
BIOS settings.
• If the hard disk password is forgotten, Lenovo cannot remove the password or recover data from the
storage drive.
Use software security solutions
This section provides software solutions to secure your computer and information.
Use firewalls
A firewall can be hardware, software, or a combination of both depending on the level of security required.
Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If the
computer is preinstalled with a firewall program, it helps protect against computer Internet security threats,
unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more information
about how to use the firewall program, refer to the help system of your firewall program.
14 M90n-1 User Guide
To use firewalls:
1. Go to Control Panel and view by large icons or small icons.
2. Click Windows Defender Firewall, and then follow the on-screen instructions.
Use antivirus programs
The computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate
viruses.
Lenovo provides a full version of antivirus software on the computer with a free 30-day subscription. After 30
days, you must renew the license to continue receiving the antivirus software updates.
Note: Virus definition files must be kept up-to-date to guard against new viruses.
For more information about how to use your antivirus software, refer to the help system of your antivirus
software.
Use computrace Agent software embedded in firmware (for selected
models)
The Computrace Agent software is an IT asset management and computer theft recovery solution. The
software detects if changes have been made on the computer, such as hardware, software, or the computer
call-in location. You might have to purchase a subscription to activate the Computrace Agent software.
Use BIOS security solutions
This section provides BIOS solutions to secure your computer and information.
Erase all storage drive data
It is recommended that you erase all storage drive data before recycling a storage drive or the computer.
To erase all storage drive data:
1. Set a hard disk password for the storage drive you will recycle. See “Use passwords” on page 13.
2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Security ➙ Hard Disk Password ➙ Security Erase HDD Data and press Enter.
4. Select the storage drive you will recycle and press Enter.
5. A message is displayed, prompting you to confirm the operation. Select Yes and press Enter. The
erasing process begins.
Note: During the erasing process, the power button and the keyboard are disabled.
6. After the erasing process is completed, a message is displayed, prompting you to reset the system.
Select Continue.
Note: Depending on the storage drive capacity, the erasing process will take half an hour to three hours.
7. After the resetting process is completed, one of the following will happen:
• If the data on the system storage drive is erased, you will be prompted that no operating system is
available.
• If the data on the non-system storage drive is erased, the computer restarts automatically.
Chapter 4.Secure your computer and information 15
Use the cover presence switch
The cover presence switch prevents the computer from logging in to the operating system when the
computer cover is not properly installed or closed.
To enable the cover presence switch connector on the system board:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Cover Tamper Detected and press Enter.
3. Select Enabled and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
When the cover presence switch connector on the system board is enabled, if the cover presence switch
detects that the computer cover is not correctly installed or closed, an error message will be displayed when
you turn on the computer. To bypass the error message and log in to the operating system:
1. Properly install or close the computer cover.
2. Enter the BIOS menu, save and then exit.
Use Smart USB Protection
The Smart USB Protection function is a security function that helps prevent data from being copied from the
computer to USB storage devices connected to the computer. You can set the Smart USB Protection
function to one of the following modes:
• Disabled (default setting): You can use the USB storage devices without limitation.
• Read Only: You cannot copy data from the computer to the USB storage devices. However, you can
access or modify data on the USB storage devices.
• No Access: You cannot access the USB storage devices from the computer.
To configure the Smart USB Protection function:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Smart USB Protection and press Enter.
3. Select the desired setting and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
16 M90n-1 User Guide
Chapter 5. UEFI BIOS
This chapter provides information about configuring and updating UEFI BIOS, and clearing CMOS.
What is UEFI BIOS
Note: The operating system settings might override any similar settings in UEFI BIOS.
UEFI BIOS is the first program that the computer runs when the computer is turned on. UEFI BIOS initializes
the hardware components and loads the operating system and other programs. Your computer comes with a
setup program with which you can change UEFI BIOS settings.
Enter the BIOS menu
Restart the computer. When the logo screen is displayed, press F1 or Fn+F1 to enter the BIOS menu.
Note: If you have set BIOS passwords, enter the correct passwords when prompted. You also can select No
or press Esc to skip the password prompt and enter the BIOS menu. However, you cannot change the
system configurations that are protected by passwords.
Navigate in the BIOS interface
Attention: The default configurations are already optimized for you in boldface. Improper change of the
configurations might cause unexpected results.
Depending on your keyboard, you can navigate in the BIOS interface by pressing the following keys, or
combinations of Fn and the following keys:
F1 or Fn+F1 Display the General Help screen.
Esc or Fn+Esc Exit the submenu and return to the parent menu.
↑↓ or Fn+↑↓ Locate an item.
← → or Fn+← → Select a tab.
+/– or Fn++/– Change to a higher or lower value.
Enter Enter the selected tab or submenu.
F9 or Fn+F9 Restore to the default settings.
F10 or Fn+F10 Save your configuration and exit.
Change the display language of UEFI BIOS
UEFI BIOS supports three display languages: English, French and simplified Chinese.
To change the display language of UEFI BIOS:
1. Select Main ➙ Language and press Enter.
2. Set the display language as desired.
© Copyright Lenovo 2019, 2020 17
Set the system date and time
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Main ➙ System Time & Date and press Enter.
3. Set the system date and time as desired.
4. Press F10 or Fn+F10 to save the changes and exit.
Change the startup sequence
If the computer does not start up from a device as expected, you can change the startup device sequence
permanently or select a temporary startup device.
Change the startup device sequence permanently
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert
the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Startup, and then follow the on-screen instructions to change the startup sequence.
4. Press F10 or Fn+F10 to save the changes and exit.
Select a temporary startup device
Note: Not all discs and storage drives are bootable.
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert
the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12.
3. Select the storage device as desired and press Enter.
If you want to change the startup device sequence permanently, select Enter Setup on Startup Device Menu
and press Enter to enter the BIOS menu.
Enable or disable the configuration change detection feature
If you enable configuration change detection, when the POST detects configuration changes of some
hardware devices (such as storage drives or memory modules), an error message will be displayed when you
turn on the computer.
To enable or disable the configuration change detection feature:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Configuration Change Detection and press Enter.
3. Enable or disable the feature as desired.
18 M90n-1 User Guide
4. Press F10 or Fn+F10 to save the changes and exit.
To bypass the error message and log in to the operating system, press F2 or Fn+F2. To clear the error
message, enter the BIOS menu, save and then exit.
Enable or disable the automatic power-on feature
The Automatic Power On item in UEFI BIOS provides various options for you to make your computer start up
automatically.
To enable or disable the automatic power-on feature:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Power ➙ Automatic Power On and press Enter.
3. Select the feature as desired and press Enter.
4. Enable or disable the feature as desired.
5. Press F10 or Fn+F10 to save the changes and exit.
Enable or disable the smart power-on feature
Ensure that the keyboard is connected to a USB connector supporting the smart power-on feature. With the
smart power-on feature enabled, you can start up or wake up the computer from the hibernation mode by
pressing Alt+P.
To enable or disable the smart power-on feature:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Power ➙ Smart Power On and press Enter.
3. Enable or disable the feature as desired.
4. Press F10 or Fn+F10 to save the changes and exit.
Enable or disable the ErP LPS compliance mode
Lenovo computers meet the eco-design requirements of the ErP Lot 3 regulation. For more information, go
to:
https://www.lenovo.com/us/en/compliance/eco-declaration
You can enable the ErP LPS compliance mode to reduce the consumption of electricity when the computer
is off or in sleep mode.
To enable or disable the ErP LPS compliance mode:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Power ➙ Enhanced Power Saving Mode and press Enter.
3. Depending on whether you select Enabled or Disabled, do one of the following:
• If you select Enabled, press Enter. Then, select Power ➙ Automatic Power On and press Enter.
Check whether the Wake on LAN feature is disabled automatically. If no, disable it.
• If you select Disabled, press Enter. Then, go to the next step.
4. Press F10 or Fn+F10 to save the changes and exit.
When the ErP LPS compliance mode is enabled, you can wake up the computer by doing one of the
following:
Chapter 5.UEFI BIOS 19
• Press the power button.
• Enable the Wake Up on Alarm feature to make the computer wake up at a set time.
To meet the off mode requirement of ErP compliance, you need to disable the Fast Startup function.
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options ➙ Choose what the power buttons do ➙ Change settings that are currently
unavailable.
3. Clear the Turn on fast startup (recommended) option from the Shutdown settings list.
Enable or disable the ICE thermal alert feature
With the ICE thermal alert feature enabled, an alert log will be written into the Windows system log when a
critical thermal situation occurs. The alert log can help you identify thermal problems, such as malfunctioning
fans, abnormally high temperature, or poor cooling performances.
To enable or disable the ICE thermal alert feature:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Power ➙ Intelligent Cooling Engine (ICE) and press Enter.
3. Select ICE Thermal Alert and press Enter.
4. Enable or disable the feature as desired.
5. Press F10 or Fn+F10 to save the changes and exit.
Change the ICE performance mode
You can adjust the acoustic and thermal performance of your computer by changing the ICE performance
mode. Three choices are available:
• Better Acoustic Performance (default setting): The computer works with less noise at a normal thermal
level.
• Better Thermal Performance: The computer works at a better thermal level with normal acoustic
performance.
• Full Speed: All fans in the computer will run at full speed.
To change the ICE performance mode:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Power ➙ Intelligent Cooling Engine (ICE) and press Enter.
3. Select ICE Performance Mode and press Enter.
4. Set the ICE performance mode as desired.
5. Press F10 or Fn+F10 to save the changes and exit.
Change BIOS settings before installing a new operating system
BIOS settings vary by operating system. Change the BIOS settings before installing a new operating system.
Microsoft constantly makes updates to the Windows 10 operating system. Before installing a particular
Windows 10 version, check the compatibility list for the Windows version. For details, go to:
https://support.lenovo.com/us/en/solutions/windows-support
To change the BIOS settings:
20 M90n-1 User Guide
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. From the main interface, select Security ➙ Secure Boot and press Enter.
3. Depending on the operating system to be installed, do one of the following:
• To install the Windows 10 (64-bit) and most of Linux operating system, select Enabled for Secure
Boot.
• To install an operating system that does not support secure boot, select Disabled for Secure Boot.
4. Press F10 or Fn+F10 to save the changes and exit.
Update UEFI BIOS
When you install a new program, device driver, or hardware component, you might need to update UEFI
BIOS. You can update the BIOS from your operating system or a flash update disc (supported only on
selected models).
Download and install the latest UEFI BIOS update package by one of the following methods:
• From Lenovo Vantage:
Open Lenovo Vantage to check the available update packages. If the latest UEFI BIOS update package is
available, follow the on-screen instructions to download and install the package.
• From the Lenovo Support Web site:
1. Go to https://pcsupport.lenovo.com.
2. Download the flash BIOS update driver for the operating system version or the ISO image version
(used to create a flash update disc). Then, download the installation instructions for the flash BIOS
update driver you have downloaded.
3. Print the installation instructions and follow the instructions to update the BIOS.
Recover from a BIOS update failure
1. Remove all media from the drives and turn off all connected devices.
2. Insert the BIOS update disc into the optical drive, and then turn off the computer.
3. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the
Clear CMOS /Recovery jumper.
4. Move the jumper from the standard position to the maintenance position.
5. Reconnect the power cords for the computer and the monitor to electrical outlets.
6. Turn on the computer and the monitor. When the computer beeps, the recovery process begins.
7. After the recovery process is completed, the computer will be turned off automatically.
Note: Depending on the computer model, the recovery process will take two to three minutes.
8. Disconnect all power cords from electrical outlets.
9. Move the jumper back to the standard position.
10. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and
the monitor to electrical outlets.
11. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.
12. To prevent data loss, ensure that BIOS settings are restored to an earlier point. For BIOS configurations,
see Chapter 5 “UEFI BIOS” on page 17.
Chapter 5.UEFI BIOS 21
Clear CMOS
1. Remove all media from the drives and turn off all connected devices and the computer.
2. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the
Clear CMOS /Recovery jumper.
3. Move the jumper from the standard position to the maintenance position.
4. Reconnect the power cords for the computer and the monitor to electrical outlets.
5. Turn on the computer and the monitor. When the computer beeps, wait for approximately 10 seconds.
6. Turn off the computer by holding the power button for approximately four seconds.
7. Disconnect all power cords from electrical outlets.
8. Move the jumper back to the standard position.
9. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and
the monitor to electrical outlets.
10. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.
11. To prevent data loss, ensure that BIOS settings are restored to an earlier point. For BIOS configurations,
see Chapter 5 “UEFI BIOS” on page 17.
22 M90n-1 User Guide
Chapter 6. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve computer problems. Use the basic procedure as a starting point
for resolving computer problems.
Basic procedure for resolving computer problems
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
1. Check that:
a. The cables for all connected devices are connected correctly and securely.
b. All components have been reassembled correctly.
c. All connected devices that require ac power are connected to properly grounded and working
electrical outlets.
d. All connected devices are enabled in UEFI BIOS.
2. Use an antivirus program (if any) to see if the computer has been infected by a virus. If the program
detects a virus, remove the virus.
3. See Chapter 6 “Troubleshooting, diagnostics, and recovery” on page 23 to resolve the problem you are
experiencing, run the diagnostic program, and recover your operating system.
4. If the problem persists, contact Lenovo. See Chapter 8 “Help and support” on page 47.
Troubleshooting
Use the troubleshooting information to find solutions to problems that have definite symptoms.
© Copyright Lenovo 2019, 2020 23
Startup problems
Problem Solution
The computer does not start up when you
press the power button.
• Ensure that the power cord is correctly connected to the rear of the
computer and to a working electrical outlet.
• If the computer has a secondary power switch on the rear of the
computer, ensure that it is switched on.
• The power indicator on the front of the computer is on.
• The computer voltage matches the voltage available at the
electrical outlet for your country or region.
The operating system does not start up from
the correct storage drive or fails to start up
• Ensure that all storage drive signal cables and power cables are
connected correctly.
• Ensure that the storage drive the computer starts up from is listed
as the first startup device in UEFI BIOS.
• In rare cases, the storage drive with the operating system might get
corrupted or damaged. In such cases, you might need to replace
the storage drive.
• If the computer is installed with an Optane memory:
– Ensure that the Optane memory is not removed.
– Ensure that the Optane memory is not damaged. Check the
Optane memory using diagnostic tools.
The computer beeps multiple times before
the operating system starts up. Ensure that no keys are stuck.
24 M90n-1 User Guide
Audio problems
Problem Solution
The audio cannot be heard on the Windows®
operating system.
• If you are using powered external speakers that have an On/Off
control, ensure that:
– The On/Off control is set to the On position.
– The speaker power cable is connected to a properly grounded,
functional ac electrical outlet.
• If your external speakers have a volume control, ensure that the
volume is not set too low.
• Click the volume icon in the Windows notification area on the
taskbar. Check the speaker and volume settings. Do not mute the
speaker or set the volume at a very low level.
• If your computer has a front audio panel, ensure that the volume is
not set too low.
• Ensure that your external speakers (and headphones, if used) are
connected to the correct audio connector on the computer. Most
speaker cables are color-coded to match the audio connector.
Note: When external-speaker or headphone cables are connected
to the audio connector, the internal speaker, if present, is disabled.
In most cases, if an audio adapter is installed in one of the
expansion slots, the audio function built into the system board is
disabled. Therefore, you must use the audio connectors on the
audio adapter.
• Ensure that the program you are running is designed for use in the
Microsoft Windows® operating system. If the program is designed
to run in DOS, the program does not use the Windows sound
feature. The program must be configured to use SoundBlaster Pro
or SoundBlaster emulation.
• Ensure that the audio device drivers are correctly installed.
The sound does not come from the headset
or headphones.
Select the headset or headphones as the default audio output device
in advanced sound settings.
The sound comes from one of the external
speakers.
• Ensure that the speaker cable is inserted completely into the
connector on the computer.
• Ensure that the cable that connects the left speaker to the right
speaker is securely connected.
• Ensure that the balance settings are set correctly.
1. Right-click the volume icon in the Windows notification area
on the taskbar. Then, click Open Volume Mixer and select the
desired speaker.
2. Click the speaker icon on top of the volume control, and then
click the Levels tab.
Network problems
Note: The Wi-Fi® and Bluetooth features are optional.
Chapter 6.Troubleshooting, diagnostics, and recovery 25
Problem Solution
The computer cannot connect to an Ethernet
LAN.
• Connect the cable from the Ethernet connector to the RJ45
connector of the hub.
• Enable the Ethernet LAN feature in UEFI BIOS.
• Enable the Ethernet LAN adapter.
1. Go to Control Panel and view by large icons or small icons.
2. Click Network and Sharing Center ➙ Change adapter
settings.
3. Right-click the Ethernet LAN adapter icon and click Enable.
• Update or reinstall the Ethernet LAN driver.
• Install all networking software that is necessary for your network
environment. Check with your LAN administrator for the necessary
networking software.
• Set the same duplex for the switch port and the adapter. If you
configured the adapter for full duplex, ensure that the switch port is
also configured for full duplex. Setting a wrong duplex mode might
degrade performance, cause data loss, or result in lost
connections.
When a Gigabit Ethernet model computer is
used at a speed of 1000 Mbps, the Ethernet
LAN connection fails or errors occur.
Connect the network cable to the Ethernet connector using Category
5 wiring and a 100 BASE-T hub/switch (not 100 BASE-X).
The Wake On LAN (WOL) feature does not
work. Enable the Wake On LAN feature in UEFI BIOS.
The Wi-Fi feature does not work.
• Enable the Wi-Fi feature in UEFI BIOS.
• Enable all Wi-Fi devices.
1. Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or
provide confirmation, if prompted.
3. Expand Network adapters to display all network devices.
4. Right-click each Wi-Fi device, and then click Enable device.
• Enable the Wi-Fi feature in Windows Settings.
1. Open the Start menu.
2. Click Settings ➙ Network & Internet ➙ Wi-Fi.
3. Enable the Wi-Fi feature.
• Update or reinstall the Wi-Fi driver.
26 M90n-1 User Guide
Problem Solution
The Bluetooth feature does not work.
• Enable the Bluetooth feature in UEFI BIOS.
• Enable all Bluetooth devices.
1. Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or
provide confirmation if prompted.
3. Expand Bluetooth to display all Bluetooth devices. Right-click
each Bluetooth device, and then click Enable device.
4. Expand Network adapters to display all network devices.
Right-click each Bluetooth device, and then click Enable
device.
• Turn on the Bluetooth radio.
1. Open the Start menu.
2. Click Settings ➙ Devices ➙ Bluetooth & other devices.
3. Turn on the Bluetooth switch to enable the Bluetooth feature.
• Update or reinstall the Bluetooth driver.
Sound does not come from the Bluetooth
headset or headphones.
Select the Bluetooth headset or headphones as the default audio
output device in advanced sound settings.
Chapter 6.Troubleshooting, diagnostics, and recovery 27
Performance problems
Problem Solution
Excessive fragmented files exist on the
storage drives.
Note: Depending on the volume of the storage drives and amount of
data stored on the storage drives, the disk-defragmentation process
might take up to several hours.
1. Close any open programs and windows.
2. Open the Start menu.
3. Click Windows System ➙ File Explorer ➙ This PC.
4. Right-click your C drive and then click Properties.
5. Click the Tools tab.
6. Click Optimize. Select the drive as desired, and then click
Optimize.
7. Follow the on-screen instructions.
The free storage drive space is insufficient.
• Clean out your Inbox, Sent Items, and Deleted Items folders from
your e-mail application.
• Clean up your C drive.
1. Open the Start menu.
2. Click Windows System ➙ File Explorer ➙ This PC.
3. Right-click your C drive and then click Properties.
4. Check the amount of free space, and then click Disk Cleanup.
5. A list of unnecessary file categories is displayed. Select the
category you want to delete, and then click OK.
• Disable some Windows features or remove some unnecessary
programs.
1. Go to Control Panel and view by large icons or small icons.
2. Click Programs and Features.
3. Do one of the following:
– To disable some Windows features, click Turn Windows
features on or off. Follow the on-screen instructions.
– To remove some unnecessary programs, select the
program you want to remove, and then click Uninstall/
Change or Uninstall.
The free memory space is insufficient.
• Right-click a blank area on the taskbar and open Task Manager.
Then, end some tasks you are not performing.
• Install additional memory modules.
28 M90n-1 User Guide
Storage drive problems
Problem Solution
Some or all storage drives are missing from
the BIOS menu.
• Ensure that the signal cables and power cables for all the storage
drives are connected correctly.
• Ensure that the computer is configured correctly to support the
storage drives.
– If the computer is installed with SATA storage drives, ensure
that the SATA storage drive enablement module (one to five
storage drives) is installed.
– If the computer is installed with SAS storage drives, ensure that
the SAS storage drive enablement module (one to five storage
drives) or the LSI MegaRAID SAS adapter is installed.
Serial connector problems
Problem Solution
The serial connector cannot be accessed.
• Connect the serial cable from the serial connector on the computer
to the serial device. If the serial device has its own power cord,
connect the power cord to a grounded electrical outlet.
• Turn on the serial device and keep the device online.
• Install any programs supplied with the serial device. Refer to the
documentation that comes with the serial device for more
information.
• If you added one serial-connector adapter, ensure that the adapter
is installed correctly.
USB device problems
Problem Solution
A USB device cannot be accessed.
• Connect the USB cable from the USB connector to the USB
device. If the USB device has its own power cord, connect the
power cord to a grounded electrical outlet.
• Turn on the USB device and keep the device online.
• Install any device drivers or programs supplied with the USB
device. Refer to the documentation that comes with the USB
device for more information.
• Disconnect and reconnect the USB connector to reset the USB
device.
• Ensure that the Smart USB Protection function is disabled in UEFI
BIOS.
Chapter 6.Troubleshooting, diagnostics, and recovery 29
Software problems
Problem Solution
Some programs do not work as expected.
1. Check whether the problem is caused by a program.
a. Ensure that the software is compatible with the computer.
Refer to the information supplied with the software for more
information.
b. Verify that other software works correctly on the computer.
c. Verify that the software you are using works on another
computer.
2. If the problem is caused by a program:
• Refer to the printed documentation that comes with the
program or the help system of the program.
• Update the program.
• Uninstall the program and then reinstall it. To download a
program that is preinstalled on your computer, go to https://
pcsupport.lenovo.com and follow the on-screen instructions.
Lenovo diagnostic tools
For information about Lenovo diagnostic tools, go to:
https://pcsupport.lenovo.com/lenovodiagnosticsolutions
Recovery
This section introduces the recovery information of the Windows 10 operating system. Ensure that you read
and follow the on-screen recovery instructions. The data on your computer might be deleted during the
recovery process. To avoid data loss, make a backup copy of all the data that you want to keep.
Restore system files and settings to an earlier point
1. Go to Control Panel and view by large icons or small icons.
2. Click Recovery ➙ Open System Restore. Then, follow the on-screen instructions.
Restore your files from a backup
Note: If you use the File History tool to restore your files from a backup, ensure that you backed up your
data earlier with the tool.
1. Go to Control Panel and view by large icons or small icons.
2. Click File History ➙ Restore personal files. Then, follow the on-screen instructions.
Reset your computer
In the resetting process, you can choose to keep your files or remove them when you reinstall the operating
system.
Note: The items in the graphical user interface (GUI) might change without notice.
1. Open the Start menu, and then click Settings ➙ Update & Security ➙ Recovery.
2. In the Reset this PC section, click Get started.
3. Follow the on-screen instructions to reset your computer.
30 M90n-1 User Guide
Use advanced options
1. Open the Start menu, and then click Settings ➙ Update & security ➙ Recovery.
2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.
3. Select a preferred option, and then follow the on-screen instructions.
Windows automatic recovery
Note: Ensure that your computer is connected to ac power during the recovery process.
The Windows recovery environment on your computer operates independently from the Windows 10
operating system. It enables you to recover or repair the operating system even if the Windows 10 operating
system fails to start.
After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then,
you can choose repair and recovery options by following the on-screen instructions.
Create and use a recovery USB device
It is recommended that you create a recovery USB drive as early as possible as a backup for the Windows
recovery programs. With the recovery USB drive, you can troubleshoot and fix the problems even if the
preinstalled Windows recovery programs are damaged. If you did not create a recovery USB drive as a
precautionary measure, you can contact Lenovo Customer Support Center and purchase one from Lenovo.
For a list of the Lenovo Support phone numbers for your country or region, go to:
https://pcsupport.lenovo.com/supportphonelist
Create a recovery USB drive
Attention: The creation process deletes anything stored on the USB drive. To avoid data loss, make a
backup copy of all the data that you want to keep.
1. Ensure that your computer is connected to ac power.
2. Prepare a USB drive with capacity of at least 16 GB. The actual USB capacity required depends on the
size of the recovery image.
3. Connect the prepared USB drive to the computer.
4. Type recovery in the search box. Then, click Create a recovery drive.
5. Click Yes in the User Account Control window to allow the Recovery Media Creator program to start.
6. In the Recovery Drive window, follow the on-screen instructions to create a recovery USB drive.
Use the recovery USB drive
If your computer cannot be started, go to Chapter 8 “Help and support” on page 47 first to try to solve the
problem by yourself. If the problem persists, use the recovery USB drive to recover your computer.
1. Ensure that your computer is connected to ac power.
2. Connect the recovery USB drive to the computer.
3. Turn on or restart the computer. When the logo screen is displayed, press F12. The Boot Menu window
opens.
4. Select the recovery USB drive as the boot device.
5. Click Troubleshoot to display optional recovery solutions.
6. Select a recovery solution as desired. Then, follow the on-screen instructions to complete the process.
Chapter 6.Troubleshooting, diagnostics, and recovery 31
Update the device driver
Attention: Reinstalling device drivers will change the current configuration of the computer.
You should download the latest driver for a component when you notice poor performance from that
component or when you added a component. This action might eliminate the driver as the potential cause of
a problem. Download and install the latest driver by one of the following methods:
• From Lenovo Vantage:
Open Lenovo Vantage to check the available update packages. If the latest UEFI BIOS update package is
available, follow the on-screen instructions to download and install the package.
• From the Lenovo Support Web site:
Go to https://pcsupport.lenovo.com and select the entry for your computer. Then, follow the on-screen
instructions to download and install necessary drivers and software.
• From Windows Update:
Note: The device drivers provided by Windows Update might not be tested by Lenovo. It is
recommended that you get device drivers from Lenovo.
1. Open the Start menu.
2. Click Settings ➙ Update & Security ➙ Windows Update.
3. Follow the on-screen instructions.
32 M90n-1 User Guide
Chapter 7. CRU replacement
What are CRUs
Customer Replaceable Units (CRUs) are parts that can be upgraded or replaced by the customer. Lenovo
computers contain the following types of CRUs:
• Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by
trained service technicians at an additional cost.
• Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill
level. Trained service technicians can also provide service to install or replace the parts under the type of
warranty designated for the customer’s machine.
If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement
instructions are shipped with your product and are available from Lenovo at any time upon request. You
might be required to return the defective part that is replaced by the CRU. When return is required: (1) return
instructions, a prepaid shipping label, and a container will be included with the replacement CRU; and (2) you
might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty (30)
days of your receipt of the replacement CRU. For full details, see the Lenovo Limited Warranty
documentation at:
https://www.lenovo.com/warranty/llw_02
Refer to the following CRU list for your computer.
Self-service CRUs
• Bottom cover
• DIN rail bracket kit*
• Keyboard*
• M.2 solid-state drive
• Mouse*
• Power adapter*
• Power adapter bracket kit*
• Power cord*
• Rear Wi-Fi antenna*
• VESA mount bracket kit*
Optional-service CRUs
• Wi-Fi card*
* for selected models
Replace a CRU
Follow the replacement procedure to replace a CRU.
© Copyright Lenovo 2019, 2020 33
Power adapter and power cord
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
3. Remove the power adapter.
4. Remove the power cord.
34 M90n-1 User Guide
5. Install the power cord.
6. Install the power adapter.
7. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
DIN rail bracket
Note: The DIN rail bracket is available only on some models.
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
3. Turn over the computer so that the bottom cover is facing up.
4. Remove the DIN rail bracket.
Chapter 7.CRU replacement 35
5. Install the DIN rail bracket.
6. Turn over the computer so that the bottom cover is facing down.
7. Reconnect the external cables to the corresponding connectors on the computer, and then reconnect
the power cord to the electrical outlet.
Power adapter bracket
Note: The power adapter bracket is available only on some models.
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
3. Remove the power cord from the power adapter. See “Power adapter and power cord” on page 34.
4. Remove the screw that secures the power adapter bracket to the wall mount bracket.
36 M90n-1 User Guide
9. Install the power adapter bracket to the computer.
10. Turn over the computer so that the bottom cover is facing down.
11. Install the power adapter into the power adapter bracket.
12. Install the power adapter bracket to the wall mount bracket.
38 M90n-1 User Guide
13. Install the screw to secure the power adapter bracket to the wall mount bracket.
14. Install the power cord to the power adapter. See “Power adapter and power cord” on page 34.
15. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
VESA mount bracket
Note: The VESA mount bracket is available only on some models.
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
3. Remove the screw that secures the VESA mount bracket to the wall mount bracket.
Chapter 7.CRU replacement 39
4. Remove the VESA mount bracket from the wall mount bracket.
5. Turn over the computer so that the bottom cover is facing up.
6. Remove the VESA mount bracket from the computer.
7. Install the VESA mount bracket to the computer.
40 M90n-1 User Guide
8. Install the VESA mount bracket to the wall mount bracket.
9. Install the screw to secure the VESA mount bracket to the wall mount bracket.
10. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
Rear Wi-Fi antenna
Note: The rear Wi-Fi antenna is available only on some models.
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
Chapter 7.CRU replacement 41
3. Remove the rear Wi-Fi antenna.
4. Install the rear Wi-Fi antenna.
5. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
Bottom cover
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Before you open the bottom cover, turn off the computer and wait several minutes until the computer is cool.
42 M90n-1 User Guide
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
3. Unlock any locking device that secures the computer cover.
4. Remove the bracket, if any. See “DIN rail bracket” on page 35, “Power adapter bracket” on page 36, or
“VESA mount bracket” on page 39.
5. Turn over the computer so that the bottom cover is facing up.
6. Remove the bottom cover.
7. Install the bottom cover.
8. Turn over the computer so that the bottom cover is facing down.
9. Reinstall the bracket you have removed.
10. If a locking device is available, use it to lock the computer.
11. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
Wi-Fi card
Note: The Wi-Fi card and Wi-Fi antenna cables are available only on some models.
Chapter 7.CRU replacement 43
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Turn over the computer so that the bottom cover is facing up.
2. Remove the bottom cover. See “Bottom cover” on page 42.
3. Remove the Wi-Fi card.
4. Install the Wi-Fi card.
5. Reinstall the removed parts. Then, reconnect the power adapter and all disconnected cables to the
computer.
Note: If a locking device is available, use it to lock the computer.
6. Turn over the computer so that the bottom cover is facing down.
44 M90n-1 User Guide
M.2 solid-state drive
Prerequisite
Before you start, read Appendix A “Important safety information” on page 51 and print the following
instructions.
Replacement procedure
1. Turn over the computer so that the bottom cover is facing up.
2. Remove the bottom cover. See “Bottom cover” on page 42.
3. Remove an M.2 solid-state drive.
4. Install an M.2 solid-state drive. For more information about the corresponding slot for the M.2 solid-state
drive, see “System board” on page 4.
5. Reinstall the removed parts. Then, reconnect the power adapter and all disconnected cables to the
computer.
Note: If a locking device is available, use it to lock the computer.
6. Turn over the computer so that the bottom cover is facing down.
Chapter 7.CRU replacement 45
46 M90n-1 User Guide
Chapter 8. Help and support
Self-help resources
Use the following self-help resources to learn more about the computer and troubleshoot problems.
Resources How to access?
Use Lenovo Vantage to:
• Configure device settings.
• Download and install UEFI BIOS, drivers and firmware
updates.
• Secure you computer from outside threats.
• Check the computer warranty status.
• Access User Guide and helpful articles.
• Open the Start menu and click Lenovo Vantage.
• Use Windows Search.
Product documentation:
• Safety and Warranty Guide
• Setup Guide
• This User Guide
• Regulatory Notice
Go to https://pcsupport.lenovo.com. Then, follow the on-
screen instructions to filter out the documentation you
want.
Lenovo Support Web site with the latest support
information of the following:
• Drivers and software
• Diagnostic solutions
• Product and service warranty
• Product and parts details
• Knowledge base and frequently asked questions
https://pcsupport.lenovo.com
Windows help information
• Open the Start menu and click Get Help or Tips.
• Use Windows Search or the Cortana® personal
assistant.
• Microsoft support Web site:
https://support.microsoft.com
© Copyright Lenovo 2019, 2020 47
Call Lenovo
If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support
Center.
Before you contact Lenovo
Prepare the following before you contact Lenovo:
1. Record the problem symptoms and details:
• What is the problem? Is it continuous or intermittent?
• Any error message or error code?
• What operating system are you using? Which version?
• Which software applications were running at the time of the problem?
• Can the problem be reproduced? If so, how?
2. Record the system information:
• Product name
• Machine type and serial number
The following illustration shows where to find the machine type and serial number of your computer.
Lenovo Customer Support Center
During the warranty period, you can call Lenovo Customer Support Center for help.
Telephone numbers
For a list of the Lenovo Support phone numbers for your country or region, go to:
https://pcsupport.lenovo.com/supportphonelist
Note: Phone numbers are subject to change without notice. If the number for your country or region is not
provided, contact your Lenovo reseller or Lenovo marketing representative.
Services available during the warranty period
• Problem determination - Trained personnel are available to assist you with determining if you have a
hardware problem and deciding what action is necessary to fix the problem.
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• Lenovo hardware repair - If the problem is determined to be caused by Lenovo hardware under warranty,
trained service personnel are available to provide the applicable level of service.
• Engineering change management - Occasionally, there might be changes that are required after a product
has been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes
(ECs) that apply to your hardware available.
Services not covered
• Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts
• Identification of software problem sources
• Configuration of UEFI BIOS as part of an installation or upgrade
• Changes, modifications, or upgrades to device drivers
• Installation and maintenance of network operating systems (NOS)
• Installation and maintenance of programs
For the terms and conditions of the Lenovo Limited Warranty that apply to your Lenovo hardware product,
see “Warranty information” in the Safety and Warranty Guide that comes with your computer.
Purchase additional services
During and after the warranty period, you can purchase additional services from Lenovo at:
https://www.lenovo.com/services
Service availability and service name might vary by country or region.
Chapter 8.Help and support 49
50 M90n-1 User Guide
Appendix A. Important safety information
Safety notices
This information can help you safely use your computer. Follow and retain all information included with your
computer. The information in this document does not alter the terms of your purchase agreement or the
Limited Warranty. For more information, see "Warranty Information" in the Safety and Warranty Guide that
comes with your computer.
Customer safety is important. Our products are developed to be safe and effective. However, personal
computers are electronic devices. Power cords, power adapters, and other features can create potential
safety risks that can result in physical injury or property damage, especially if misused. To reduce these risks,
follow the instructions included with your product, observe all warnings on the product and in the operating
instructions, and review the information included in this document carefully. By carefully following the
information contained in this document and provided with your product, you can help protect yourself from
hazards and create a safer computer work environment. If the computer is used in a manner not specified by
the manufacturer, the protection provided by the computer may be impaired.
Note: This information includes references to power adapters and batteries. In addition, some products
(such as speakers and monitors) ship with external power adapters. If you have such a product, this
information applies to your product. In addition, computer products contain a coin-sized internal battery that
provides power to the system clock even when the computer is unplugged, so the battery safety information
applies to all computer products.
Conditions that require immediate action
Products can become damaged due to misuse or neglect. Some product damage is serious enough
that the product should not be used again until it has been inspected and, if necessary, repaired by an
authorized servicer.
As with any electronic device, pay close attention to the product when it is turned on.
On very rare occasions, you might notice an odor or see a puff of smoke or sparks vent from your
product. You might also hear sounds like popping, cracking, or hissing. These might merely mean that
an internal electronic component has failed in a safe and controlled manner. Or, they might indicate a
potential safety issue. Do not take risks or attempt to diagnose the situation yourself. Contact the
Customer Support Center for further guidance. For a list of Service and Support phone numbers, see
the following Web site:
https://pcsupport.lenovo.com/supportphonelist
Frequently inspect your computer and its components for damage, wear, or signs of danger. If you
have any question about the condition of a component, do not use the product. Contact the Customer
Support Center or the product manufacturer for instructions on how to inspect the product and have it
repaired, if necessary.
In the unlikely event that you notice any of the following conditions, or if you have any safety concerns
with your product, stop using the product and unplug it from the power source and
telecommunication lines until you can speak to the Customer Support Center for further guidance.
• Power cords, plugs, power adapters, extension cords, surge protectors, or power supplies that are
cracked, broken, or damaged.
© Copyright Lenovo 2019, 2020 51
• Signs of overheating, smoke, sparks, or fire.
• Damage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreign
substances on the battery.
• A cracking, hissing, or popping sound, or strong odor that comes from the product.
• Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord, or
power adapter.
• The computer product, power cord, or power adapter has been exposed to water.
• The product has been dropped or damaged in any way.
• The product does not operate normally when you follow the operating instructions.
Note: If you notice these conditions with a product (such as an extension cord) that is not manufactured for
or by Lenovo, stop using that product until you can contact the product manufacturer for further instructions,
or until you get a suitable replacement.
Service and upgrades
Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or
your documentation. Only use a Service Provider who is approved to repair your particular product.
Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred
to as options. Replacement parts approved for customer installation are referred to as Customer
Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for
customers to install options or replace CRUs. You must closely follow all instructions when installing or
replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a
product are zero. Before you remove the covers from a product equipped with a power cord, always ensure
that the power is turned off and that the product is unplugged from any power source. If you have any
questions or concerns, contact the Customer Support Center.
Although there are no moving parts in the computer after the power cord has been disconnected, the
following warnings are required for your safety.
Moving Parts:
Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek
medical care immediately.
Hot Surface:
Avoid contact with hot components inside the computer. During operation, some components become hot
enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and
wait approximately 10 minutes for the components to cool.
After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting power
and operating the computer. This action is important to help prevent unexpected electrical shock and help
ensure the containment of an unexpected fire that could happen under extremely rare conditions.
52 M90n-1 User Guide
Sharp Edges:
When replacing CRUs, be cautious of sharp edges or corners that might cause injury. If you suffer an injury,
seek medical care immediately.
Power cords and power adapters
DANGER
Use only the power cords and power adapters supplied by the product manufacturer.
The power cords shall be safety approved. For Germany, it shall be H03VV-F, 3G, 0.75 mm2, or
better. For other countries, the suitable types shall be used accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in
ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.
Protect power cords and power adapters from liquids. For instance, do not leave your power cord
or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids
can cause a short circuit, particularly if the power cord or power adapter has been stressed by
misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector
terminals on a power adapter, which can eventually result in overheating.
Ensure that all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of
overheating (such as deformed plastic) at the ac input pins or anywhere on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs of corrosion or
overheating or where the power cord appears to have been damaged in any way.
To prevent possible overheating, do not cover the power adapter with clothing or other objects
when the power adapter is plugged into an electrical outlet.
Power cord notice
Note: The power cord and adapter provided with this product are intended to be used with this product
only. Do not use them with any other products.
For your safety, Lenovo provides a power cord with a grounded attachment plug to use with this product. To
avoid electrical shock, always use the power cord and plug with a properly grounded outlet.
Power cords provided by Lenovo in the United States and Canada are listed by Underwriter’s Laboratories
(UL) and certified by the Canadian Standards Association (CSA).
Appendix A. Important safety information 53
For units intended to be operated at 115 volts: Use a UL-listed and CSA-certified cord set consisting of a
minimum 18 AWG, Type SVT or SJT, three-conductor cord, a maximum of 15 feet in length and a parallel
blade, grounding-type attachment plug rated 10 amperes, 125 volts.
For units intended to be operated at 230 volts (U.S. use): Use a UL-listed and CSA-certified cord set
consisting of a minimum 18 AWG, Type SVT or SJT, three-conductor cord, a maximum of 15 feet in length
and a tandem blade, grounding-type attachment plug rated 10 amperes, 250 volts.
For units intended to be operated at 230 volts (outside the U.S.): Use a cord set with a grounding-type
attachment plug. The cord set should have the appropriate safety approvals for the country in which the
equipment will be installed.
Power cords provided by Lenovo for a specific country or region are usually available only in that country or
region.
For units intended to be operated in Germany: The power cords must be safety approved. For Germany, it
must be H05VV-F, 3G, 0.75 mm2, or better. For other countries, the suitable types must be used accordingly.
For units intended to be operated in Denmark: Use a cord set with a grounding-type attachment plug. The
cord set should have the appropriate safety approvals for the country in which the equipment will be
installed.
For units intended to be operated in Norway, Sweden, Finland: Use a cord set with a two-prong attachment
plug. The cord set should have the appropriate safety approvals for the country in which the equipment will
be installed.
If you intend to use your PC in a country or region that is different from your ordering location, please
purchase an additional Lenovo power cord for the country or region where the PC will be used. Refer to the
power cord guide provided in our Web site, https://pcsupport.lenovo.com, for details. Some countries and
regions support multiple voltages, so make sure you order the appropriate power cord for the intended
voltage.
Extension cords and related devices
Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use
are rated to handle the electrical requirements of the product. Never overload these devices. If power strips
are used, the load should not exceed the power strip input rating. Consult an electrician for more information
if you have questions about power loads, power requirements, and input ratings.
54 M90n-1 User Guide
Plugs and outlets
DANGER
If a receptacle (power outlet) that you intend to use with your computer equipment appears to be
damaged or corroded, do not use the outlet until it is replaced by a qualified electrician.
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a
replacement.
Do not share an electrical outlet with other home or commercial appliances that draw large
amounts of electricity; otherwise, unstable voltage might damage your computer, data, or attached
devices.
Some products are equipped with a three-pronged plug. This plug fits only into a grounded
electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it into a
non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician for an
approved outlet adapter or to replace the outlet with one that enables this safety feature. Never
overload an electrical outlet. The overall system load should not exceed 80 percent of the branch
circuit rating. Consult an electrician for more information if you have questions about power loads
and branch circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible, and located close to
the equipment. Do not fully extend power cords in a way that will stress the cords.
Be sure that the power outlet provides the correct voltage and current for the product you are
installing.
Carefully connect and disconnect the equipment from the electrical outlet.
Power supply statement
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label attached.
There are no serviceable parts inside these components. If you suspect a problem with one of these parts,
contact a service technician.
External devices
CAUTION:
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) and
1394 cables while the computer power is on; otherwise, you might damage your computer. To avoid
possible damage to attached devices, wait at least five seconds after the computer is shut down to
disconnect external devices.
Appendix A. Important safety information 55
Lithium coin-cell battery notice
DANGER
Danger of explosion if battery is incorrectly replaced.
If the coin-cell battery is not a CRU, do not attempt to replace the coin-cell battery. Replacement of
the battery must be done by a Lenovo-authorized repair facility or technician.
The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local
laws and regulations.
When replacing the lithium coin-cell battery, use only the same type or equivalent type that is recommended
by the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed
of. Swallowing the lithium coin-cell battery will cause chocking or severe internal burns in just two hours and
might even result in death.
Keep batteries away from children. If the lithium coin-cell battery is swallowed or placed inside any part of
the body, seek medical care immediately.
Do not:
• Throw or immerse into water
• Heat to more than 100 °C (212°F)
• Repair or disassemble
• Leave in an extremely low air pressure environment
• Leave in an extremely high-temperature environment
• Crush, puncture, cut, or incinerate
Dispose of the battery as required by local ordinances or regulations.
The following statement applies to users in the state of California, U.S.A.
California Perchlorate Information:
Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply, see https://www.dtsc.ca.gov/hazardouswaste/
perchlorate/.
Heat and product ventilation
Computers, power adapters, and many accessories can generate heat when turned on and when batteries
are charging. Always follow these basic precautions:
• Do not leave your computer, power adapter, or accessories in contact with your lap or any part of your
body for an extended period when the products are functioning or when the battery is charging. Your
56 M90n-1 User Guide
computer, power adapter, and many accessories produce some heat during normal operation. Extended
contact with the body could cause discomfort or, potentially, a skin burn.
• Do not charge the battery or operate your computer, power adapter, or accessories near flammable
materials or in explosive environments.
• Ventilation slots, fans, and heat sinks are provided with the product for safety, comfort, and reliable
operation. These features might inadvertently become blocked by placing the product on a bed, sofa,
carpet, or other flexible surface. Never block, cover, or disable these features.
Inspect your desktop computer for dust accumulation at least once every three months. Before inspecting
your computer, turn off the power and unplug the computer's power cord from the electrical outlet; then
remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, then
examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents,
and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating
your computer within two feet of high-traffic areas. If you must operate your computer in or near a high-traffic
area, inspect and, if necessary, clean your computer more frequently.
For your safety and to maintain optimum computer performance, always follow these basic precautions with
your desktop computer:
• Keep the cover closed whenever the computer is plugged in.
• Regularly inspect the outside of the computer for dust accumulation.
• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for
computers in dusty or high-traffic areas.
• Do not restrict or block any ventilation openings.
• Do not store or operate your computer inside furniture, as this might increase the risk of overheating.
• Airflow temperatures into the computer should not exceed 35°C (95°F).
• Do not install air filtration devices. They may interfere with proper cooling.
Electrical current safety information
DANGER
Electric current from power, telephone, and communication cables is hazardous.
To avoid a shock hazard:
• Do not use your computer during a lightning storm.
• Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration
of this product during an electrical storm.
• Connect all power cords to a properly wired and grounded electrical outlet.
• Connect properly wired outlets to any equipment that will be attached to this product.
• Whenever possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• Disconnect the attached power cords, battery, and all the cables before you open the device
covers, unless instructed otherwise in the installation and configuration procedures.
• Do not use your computer until all internal parts enclosures are fastened into place. Never use
the computer when internal parts and circuits are exposed.
Appendix A. Important safety information 57
DANGER
Connect and disconnect cables as described in the following procedures when installing, moving,
or opening covers on this product or attached devices.
To connect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlets.
5. Turn devices ON.
To disconnect:
1. Turn everything OFF.
2. First, remove power cords from outlets.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
The power cord must be disconnected from the wall outlet or receptacle before installing all other electrical
cables connected to the computer.
The power cord may be reconnected to the wall outlet or receptacle only after all other electrical cables have
been connected to the computer.
DANGER
During electrical storms, do not perform any replacement and do not connect the telephone cable
to or disconnect it from the telephone outlet on the wall.
Liquid crystal display (LCD) notice
DANGER
To avoid shock hazards:
• Do not remove the covers.
• Do not operate this product unless the stand is attached.
• Do not connect or disconnect this product during an electrical storm.
• The power cord plug must be connected to a properly wired and grounded power outlet.
• Any equipment to which this product will be attached must also be connected to properly wired
and grounded power outlets.
• To isolate the monitor from the electrical supply, you must remove the plug from the power
outlet. The power outlet should be easily accessible.
Handling:
• If your monitor weighs more than 18 kg (39.68 lb), we recommend that it be moved or lifted by two people.
Product disposal (TFT monitors):
• The fluorescent lamp in the liquid crystal display contains mercury; dispose according to local, state, or
federal laws.
58 M90n-1 User Guide
Battery warnings:
• Risk of explosion if battery is replaced by an incorrect type.
• Dispose of used batteries according to the instructions.
Use earphones, headphones, or a headset
• If your computer has both a headphone connector and an audio line-out connector, always use the
headphone connector for earphones, headphones, or a headset. However, the headphone connector
does not support the microphone of the headset.
• If your computer has both a headset connector and an audio line-out connector, always use the headset
connector for earphones, headphones, or a headset.
Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the
equalizer to maximum increases the earphone and headphone output voltage and the sound pressure level.
Therefore, to protect your hearing, adjust the equalizer to an appropriate level.
Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the
output of the headphone or earphone connectors do not comply with specifications of EN 50332-2. The
headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification
limits the computer’s maximum wide band true RMS output voltage to 150 mV. To help protect against
hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7
Limits) or a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-
2 can be dangerous due to excessive sound pressure levels.
If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of
the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If
different headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5
Limitation Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to
excessive sound pressure levels.
Choking hazard notice
CHOKING HAZARD – Product contains small parts.
Keep away from children under three years.
Plastic bag notice
DANGER
Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger of
suffocation.
Appendix A. Important safety information 59
Glass parts notice
CAUTION:
Some parts of your product may be made of glass. This glass could break if the product is dropped on
a hard surface or receives a substantial impact. If glass breaks, do not touch or attempt to remove it.
Stop using your product until the glass is replaced by trained service personnel.
Computer placement notices
Inappropriate computer placement might cause harm to children.
• Place the computer on a sturdy piece of low-rise furniture or furniture that has been anchored.
• Do not place the computer at the edge of the furniture.
• Keep the computer cables out of the reach of children.
• Some items, such as toys, might attract children. Keep such items away from the computer.
Supervise children in rooms where the above safety instructions cannot be fully implemented.
Hazardous energy statement
DANGER
Disconnect all power cords from electrical outlets before removing the computer cover or any part
that has the above label attached.
DO NOT disassemble components that have the above label attached. There are no serviceable parts inside
these components.
Your product is designed for safe use. However, hazardous voltage, current, and energy levels are present
inside any component that has this label attached. Disassembling of these components might cause fire or
might even result in death. If you suspect a problem with one of these parts, contact a service technician.
CAUTION:
Bright Light, possible skin or eye damage. Disconnect power before servicing.
CAUTION:
Infrared Light, possible skin or eye damage. Disconnect power before servicing.
Eye comfort
The property of the display in combination with following notes result in reduced eye fatigue and increased
comfort.
60 M90n-1 User Guide
For tips on how to minimize visual fatigue, please go to https://www.lenovo.com/us/en/safecomp/ to visit
“Minimizing Visual Fatigue”.
Tip-over hazard prevention notice
The computer may cause harm to children if it is not located in an appropriate place. Follow the tips below to
protect children from harm caused by the computer tipping over:
• Place the computers or monitors on sturdy furniture with a low base or furniture that has been anchored.
Push the computers or monitors as far from the edge of the furniture as possible..
• Keep remote controls, toys, and other items that might attract children away from the computers or
monitors
• Keep the computer or monitor cables out the reach of the children.
• Supervise children in rooms where these safety tips have not been followed.
CAUTION:
Some parts of your product may be made of glass. This glass could break if the product is dropped on
a hard surface or receives a substantial impact. If glass breaks, do not touch it or attempt to remove
it. Stop using your product until the glass is replaced by trained service personnel.
Remote control
CAUTION:
Do not use rechargeable batteries in this device.
Static electricity prevention
Static electricity, although harmless to you, can seriously damage computer components and options.
Improper handling of static-sensitive parts can damage the part. When you unpack an option or CRU, do not
open the static-protective package containing the part until the instructions direct you to install it.
When you handle options or CRUs, or perform any work inside the computer, take the following precautions
to avoid static-electricity damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry.
• Prevent others from touching components.
• When you install a static-sensitive option or CRU, touch the static-protective package containing the part
to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two
seconds. This reduces static electricity in the package and your body.
• When possible, remove the static-sensitive part from the static-protective packaging and install the part
without setting it down. When this is not possible, place the static-protective packaging on a smooth, level
surface and place the part on it.
• Do not place the part on the computer cover or other metal surface.
Operating environment
Maximum altitude (without pressurization)
• Operating: From -15.2 m (-50 ft) to 3048 m (10 000 ft)
Appendix A. Important safety information 61
• Storage: From -15.2 m (-50 ft) to 10 668 m (35 000 ft)
Temperature
• Operating: From 10°C (50°F) to 35°C (95°F)
• Storage in original shipping package:
– For common desktop computers: From -40°C (-40°F) to 60°C (140°F)
– For all-in-one desktop computers: From -20°C (-4°F) to 60°C (140°F)
• Storage without package: From -10°C (14°F) to 60°C (140°F)
Note: If your computer is stored or transported in temperatures less than 10°C (50°F), allow the computer to
rise slowly to an optimal operating temperature before use. This process might take up to two hours. Using
the computer in a lower operating temperature might result in irreparable damage to your computer.
Relative humidity
• Operating: 20%-80% (non-condensing)
• Storage: 20%–90% (non-condensing)
Cleaning and maintenance
With appropriate care and maintenance, your computer will serve you reliably. The following topics offer
information to help you keep your computer working with best performance.
Basic maintenance tips
Here are some basic points about keeping your computer functioning properly:
• Keep the computer in a clean, dry environment. Ensure that the computer rests on a flat, steady surface.
• Do not cover any of air vents. These air vents provide airflow to keep the computer from overheating.
• Keep electrical appliances such as an electric fan, radio, high-powered speakers, air conditioner, and
microwave oven away from your computer because the strong magnetic fields generated by these
appliances can damage the monitor and data on the storage drive.
• Keep food and drinks away from all parts of the computer. Food particles and spills might make the
keyboard and mouse stick and unusable.
• Do not get the power switches or other controls wet. Moisture can damage these parts and cause an
electrical hazard.
• Always disconnect a power cord by grasping the plug instead of the cord.
• Keep the computer software, device drivers, and operating system up-to-date.
• Empty your recycle bin on a regular basis.
• Clean out your Inbox, Sent Items, and Deleted Items folders in your e-mail application on a regular basis.
• Clean up files and free up storage drive space and memory space occasionally to prevent performance
problems.
• Keep a log book. Entries might include major software or hardware changes, device-driver updates,
intermittent problems and what you did to resolve them, and other issues you might have experienced.
The cause of a problem might be change in hardware, change in software, or any other actions that might
have taken place. A log book can help you or a Lenovo technician determine the cause of a problem.
• Back up your data on the storage drive regularly. You can restore the storage drive from a backup.
• Create a recovery medium as early as possible. You can use the recovery medium to recover your
operating system even if Windows fails to start up.
• Get the most up-to-date operating system update patches, software programs, and device drivers.
62 M90n-1 User Guide
Maintenance tips about moving the computer
Before moving the computer, take the following precautions:
1. Back up your data on the storage drive.
2. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
3. If you saved the original shipping cartons and packing materials, use them to pack the units. If you are
using different cartons, cushion the units to avoid damage.
When you move the computer to another country or region, you must take local electrical standards into
consideration. If the local electrical outlet style is different from the type you are currently using, contact the
Lenovo Customer Support Center to purchase either an electrical plug adapter or a new power cord.
Clean your computer
CAUTION:
Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free
operation.
Clean the computer surface: Wipe it with a lint-free cloth dampened in mild soap and water. Avoid applying
liquids directly to the surface.
Clean the keyboard: Wipe the keys one by one with a lint-free cloth dampened in mild soap and water. If
you wipe several keys at a time, the cloth might hook onto an adjacent key and possibly damage it. Avoid
spraying cleaner directly onto the keyboard. To remove any crumbs or dust from beneath the keys, you can
use a camera blower with a brush or use cool air from a hair dryer.
Clean the computer screen: Scratches, oil, dust, chemicals, and ultraviolet light can affect the performance
of your computer screen. Use a dry, soft lint-free cloth to wipe the screen gently. If you see a scratchlike
mark on your screen, it might be a stain. Wipe or dust the stain gently with a soft, dry cloth. If the stain
remains, moisten a soft, lint-free cloth with water or eyeglass cleaner, but do not apply liquids directly to your
computer screen. Ensure that the computer screen is dry before closing it.
Appendix A. Important safety information 63
64 M90n-1 User Guide
Appendix B. Accessibility and ergonomic information
This chapter provides information about accessibility and ergonomics.
Accessibility information
Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater
access to information and technology. This section provides information about the ways these users can get
the most out of their computer experience. You also can get the most up-to-date accessibility information
from the following Web site:
https://www.lenovo.com/accessibility
Keyboard shortcuts
The following list contains keyboard shortcuts that can help make your computer easier to use.
Note: Depending on your keyboard, some of the following keyboard shortcuts might not be available.
• Windows logo key + U: Open Ease of Access Center
• Right Shift for eight seconds: Turn on or turn off Filter Keys
• Shift five times: Turn on or turn off Sticky Keys
• Num Lock for five seconds: Turn on or turn off Toggle Keys
• Left Alt+Left Shift+Num Lock: Turn on or turn off Mouse Keys
• Left Alt+Left Shift+PrtScn (or PrtSc): Turn on or turn off High Contrast
For more information, go to https://windows.microsoft.com, and then search using any of the following
keywords: keyboard shortcuts, key combinations, shortcut keys.
Ease of Access Center
Ease of Access Center on the Windows operating system enables you to configure your computers to suit
their physical and cognitive needs.
To access Ease of Access Center:
1. Go to Control Panel and view by Category.
2. Click Ease of Access ➙ Ease of Access Center.
3. Choose the appropriate tool by following the on-screen instructions.
Ease of Access Center mainly includes the following tools:
• Magnifier
Magnifier is a useful utility that enlarges the entire screen or part of the screen so that you can see the
items better.
• Narrator
Narrator is a screen reader that reads what is displayed on the screen aloud and describes events such as
error messages.
• On-Screen Keyboard
If you prefer to type or enter data into your computer using a mouse, joystick, or other pointing device
instead of a physical keyboard, you can use On-Screen Keyboard. On-Screen Keyboard displays a visual
© Copyright Lenovo 2019, 2020 65
keyboard with all the standard keys. You can select keys using the mouse or another pointing device, or
you can tap to select the keys if your computer supports multi-touch screen.
• High Contrast
High Contrast is a feature that heightens the color contrast of some text and images on your screen. As a
result, those items are more distinct and easier to identify.
• Personalized keyboard
Adjust keyboard settings to make your keyboard easier to use. For example, you can use your keyboard
to control the pointer and make the keyboard easier to type certain key combinations.
• Personalized mouse
Adjust mouse settings to make your mouse easier to use. For example, you can change the pointer
appearance and make your mouse easier to manage windows.
Speech Recognition
Speech Recognition enables you to control your computer by voice.
You can use verbal instructions to control the keyboard and mouse. With verbal instructions, you can start
programs, open menus, click objects on the screen, dictate text into documents, and write and send e-mails.
To use Speech Recognition:
1. Go to Control Panel and view by Category.
2. Click Ease of Access ➙ Speech Recognition.
3. Follow the on-screen instructions.
Screen-reader technologies
Screen-reader technologies are primarily focused on software program interfaces, help systems, and various
online documents. For additional information about screen readers, see the following:
• Use PDFs with screen readers:
https://www.adobe.com/accessibility.html?promoid=DJGVE
• Use the JAWS screen reader:
https://www.freedomscientific.com/Products/Blindness/JAWS
• Use the NVDA screen reader:
https://www.nvaccess.org/
Screen resolution
You can make the text and images on your screen easier to read by adjusting the screen resolution of your
computer.
To adjust the screen resolution:
1. Right-click an empty area of the desktop and then click Display settings ➙ Display.
2. Follow the on-screen instructions.
Note: Setting a resolution too low might prevent some items from fitting on the screen.
Customizable item size
You can make the items on your screen easier to read by changing the item size.
• To change the item size temporarily, use the Magnifier tool in Ease of Access Center.
• To change the item size permanently:
66 M90n-1 User Guide
– Change the size of all the items on your screen.
1. Right-click an empty area of the desktop and then click Display settings ➙ Display.
2. Change the item size by following the on-screen instructions. For some applications, your
configuration might not take effect until you sign out and then sign in again.
– Change the size of the items on a Web page.
Press and hold Ctrl, and then press the plus-sign key (+) to enlarge or the minus-sign key (–) to reduce
the text size.
– Change the size of the items on the desktop or a window.
Note: This function might not work on some windows.
If your mouse has a wheel, press and hold Ctrl, and then scroll the wheel to change the item size.
Industry-standard connectors
Your computer provides industry-standard connectors that enable you to connect assistive devices.
Documentation in accessible formats
Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or
HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure that
visually impaired users can read the documentation through a screen reader. Each image in the
documentation also includes adequate alternative text so that visually impaired users can understand the
image when they use a screen reader.
Ergonomic information
Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort.
Arrange your workplace and the equipment you use to suit your individual needs and the kind of work that
you perform. In addition, use healthy work habits to maximize your performance and comfort when using
your computer.
Working in the virtual office might mean adapting to frequent changes in your environment. Adapting to the
surrounding light sources, active seating, and the placement of your computer hardware, can help you
improve your performance and achieve greater comfort.
This example shows someone in a conventional setting. Even when not in such a setting, you can follow
many of these tips. Develop good habits, and they will serve you well.
General posture: Make minor modifications in your working posture to deter the onset of discomfort caused
by long periods of working in the same position. Frequent short breaks from your work also help to prevent
minor discomfort associated with your working posture.
Appendix B. Accessibility and ergonomic information 67
Display: Position the display to maintain a comfortable viewing distance of 510 mm to 760 mm (20 inches to
30 inches). Avoid glare or reflections on the display from overhead lighting or outside sources of light. Keep
the display screen clean and set the brightness to levels that enable you to see the screen clearly. Press the
brightness control keys to adjust display brightness.
Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position.
Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to
best suit your comfort posture.
Arm and hand position: If available, use chair arm rests or an area on your working surface to provide
weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)
position. Type with a soft touch without pounding the keys.
Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.
68 M90n-1 User Guide
Appendix C. Compliance and TCO Certified information
This chapter provides regulatory, environmental, RoHS, and ENERGY STAR information about Lenovo
products.
Radio frequency compliance statements
Computer models equipped with wireless communications comply with the radio frequency and safety
standards of any country or region in which it has been approved for wireless use.
Besides this document, ensure that you read the Regulatory Notice for your country or region before using
the wireless devices contained in your computer.
Locate wireless regulatory notices
For more information about the wireless regulatory notices, refer to the Regulatory Notice at:
https://pcsupport.lenovo.com
European Union-compliance with the Radio Equipment Directive
• For computer models with wireless radio devices:
This product is in conformity with all the requirements and essential norms that apply to EU Council Radio
Equipment Directive 2014/53/EU on the approximation of the laws of the Member States relating to radio
equipment. The full text of the system EU declaration of conformity is available at:
https://www.lenovo.com/us/en/compliance/eu-doc
Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a
non-recommended modification of the product, including the installation of option cards from other
manufacturers. This product has been tested and found to comply with the limits for Class B equipment
according to European Standards harmonized in the Directives in compliance. The limits for Class B
equipment were derived for typical residential environments to provide reasonable protection against
interference with licensed communication devices.
• For computer models without wireless radio devices:
The full text of the system EU declaration of conformity is available at:
https://www.lenovo.com/us/en/compliance/eu-doc
Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a
non-recommended modification of the product, including the installation of option cards from other
manufacturers. This product has been tested and found to comply with the limits for Class B equipment
according to European Standards harmonized in the Directives in compliance. The limits for Class B
equipment were derived for typical residential environments to provide reasonable protection against
interference with licensed communication devices.
Brazil
Este equipamento não tem direito à proteção contra interferência prejudicial e não pode causar interferência
em sistemas devidamente autorizados.
This equipment is not protected against harmful interference and may not cause interference with duly
authorized systems.
© Copyright Lenovo 2019, 2020 69
Mexico
Advertencia: En Mexico la operación de este equipo está sujeta a las siguientes dos condiciones: (1) es
posible que este equipo o dispositivo no cause interferencia perjudicial y (2) este equipo o dispositivo debe
aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada.
Singapore
Korea
무선설비 전파 혼신 (사용주파수 2400∼2483.5 , 5725∼5825 무선제품해당)
해당 무선설비가 전파혼신 가능성이 있으므로 인명안전과 관련된 서비스는 할 수 없음
SAR 정보
본 장치는 전파 노출에 대한 가이드라인을 충족합니다.
본 장치는 무선 송수신기 입니다. 본 장치는 국제 가이드라인으로 권장되는 전파 노출에 대한 제한을 초과하지
않도록 설계되었습니다. 장치 액세서리 및 최신 부품을 사용할 경우 SAR 값이 달라질 수 있 습니다. SAR 값은
국가 보고 및 테스트 요구 사항과 네트워크 대역에 따라 다를 수 있습니다. 본 장치 는 사람의 신체에서 20mm
이상의 거리에서 사용할 수 있습니다.
Environmental information of countries and regions
This section provides environmental, recycling, and RoHS information about Lenovo products.
Recycling and environmental information
Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their equipment
when it is no longer needed. Lenovo offers a variety of programs and services to assist equipment owners in
recycling their IT products. For information about recycling Lenovo products, go to:
https://www.lenovo.com/us/en/compliance/recycling
The latest environmental information about our products is available at:
https://www.lenovo.com/us/en/compliance/eco-declaration
Important WEEE information
The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for
example, the European WEEE Directive, India E-Waste Management Rules). Appliances are labeled in
accordance with local regulations concerning waste electrical and electronic equipment (WEEE). These
regulations determine the framework for the return and recycling of used appliances as applicable within
70 M90n-1 User Guide
each geography. This label is applied to various products to indicate that the product is not to be thrown
away, but rather put in the established collection systems for reclaiming these end of life products.
Users of electrical and electronic equipment (EEE) with the WEEE marking must not dispose of end of life
EEE as unsorted municipal waste, but use the collection framework available to them for the return, recycle,
and recovery of WEEE and to minimize any potential effects of EEE on the environment and human health
due to the presence of hazardous substances. Lenovo electrical and electronic equipment (EEE) may contain
parts and components, which at end-of-life might qualify as hazardous waste.
EEE and waste electrical and electronic equipment (WEEE) can be delivered free of charge to the place of
sale or any distributor that sells electrical and electronic equipment of the same nature and function as the
used EEE or WEEE.
For additional WEEE information, go to:
https://www.lenovo.com/us/en/compliance/recycling
WEEE information for Hungary
Lenovo, as a producer, bears the cost incurred in connection with the fulfillment of Lenovo’s obligations
under Hungary Law No. 197/2014 (VIII.1.) subsections (1)-(5) of section 12.
Japan recycling statements
Collect and recycle a disused Lenovo computer or monitor
If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property of
the company, you must do so in accordance with the Law for Promotion of Effective Utilization of Resources.
Computers and monitors are categorized as industrial waste and should be properly disposed of by an
industrial waste disposal contractor certified by a local government. In accordance with the Law for
Promotion of Effective Utilization of Resources, Lenovo Japan provides, through its PC Collecting and
Recycling Services, for the collecting, reuse, and recycling of disused computers and monitors. For details,
visit the Lenovo Web site at:
https://www.lenovo.com/us/en/social_responsibility/sustainability/ptb_japan
Pursuant to the Law for Promotion of Effective Utilization of Resources, the collecting and recycling of home-
used computers and monitors by the manufacturer was begun on October 1, 2003. This service is provided
free of charge for home-used computers sold after October 1, 2003. For details, go to:
https://www.lenovo.com/us/en/social_responsibility/sustainability/ptb_japan
Dispose of Lenovo computer components
Some Lenovo computer products sold in Japan may have components that contain heavy metals or other
environmental sensitive substances. To properly dispose of disused components, such as a printed circuit
board or drive, use the methods described above for collecting and recycling a disused computer or monitor.
Dispose of disused lithium batteries from Lenovo computers
A button-shaped lithium battery is installed inside your Lenovo computer to provide power to the computer
clock while the computer is off or disconnected from the main power source. If you need to replace it with a
new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused
lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal
operator, and follow their instructions.
Disposal of a lithium battery must comply with local ordinances and regulations.
Appendix C. Compliance and TCO Certified information 71
Brazil recycling information
Declarações de Reciclagem no Brasil
Descarte de um Produto Lenovo Fora de Uso
Equipamentos elétricos e eletrônicos não devem ser descartados em lixo comum, mas enviados à pontos de
coleta, autorizados pelo fabricante do produto para que sejam encaminhados e processados por empresas
especializadas no manuseio de resíduos industriais, devidamente certificadas pelos orgãos ambientais, de
acordo com a legislação local.
A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você possua um
produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-mail para:
reciclar@lenovo.com, informando o modelo, número de série e cidade, a fim de enviarmos as instruções
para o correto descarte do seu produto Lenovo.
Battery recycling information for the European Union
Notice: This mark applies only to countries within the European Union (EU).
Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC
concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the
framework for the return and recycling of used batteries and accumulators as applicable throughout the
European Union. This label is applied to various batteries to indicate that the battery is not to be thrown
away, but rather reclaimed upon end of life per this Directive.
In accordance with the European Directive 2006/66/EC, batteries and accumulators are labeled to indicate
that they are to be collected separately and recycled at end of life. The label on the battery may also include
a chemical symbol for the metal concerned in the battery (Pb for lead, Hg for mercury, and Cd for cadmium).
Users of batteries and accumulators must not dispose of batteries and accumulators as unsorted municipal
waste, but use the collection framework available to customers for the return, recycling, and treatment of
batteries and accumulators. Customer participation is important to minimize any potential effects of batteries
and accumulators on the environment and human health due to the potential presence of hazardous
substances.
Before placing electrical and electronic equipment (EEE) in the waste collection stream or in waste collection
facilities, the end user of equipment containing batteries and/or accumulators must remove those batteries
and accumulators for separate collection.
Disposing of lithium batteries and battery packs from Lenovo products
A coin-cell type lithium battery might be installed inside your Lenovo product. You can find details about the
battery in the product documentation. If the battery needs to be replaced, contact your place of purchase or
contact Lenovo for service. If you need to dispose of a lithium battery, insulate it with vinyl tape, contact your
place of purchase or a waste-disposal operator, and follow their instructions.
72 M90n-1 User Guide
Disposing of battery packs from Lenovo products
Your Lenovo device might contain a lithium-ion battery pack or a nickel metal hydride battery pack. You can
find details on the battery pack in the product documentation. If you need to dispose of a battery pack,
insulate it with vinyl tape, contact Lenovo sales, service, or your place of purchase, or a waste-disposal
operator, and follow their instructions. You also can refer to the instructions provided in the user guide for
your product.
For proper collection and treatment, go to:
https://www.lenovo.com/lenovo/environment
Recycling information for mainland China
Battery recycling information for Taiwan
Restriction of Hazardous Substances (RoHS) Directive of countries and
regions
The latest environmental information about Lenovo products is available at:
https://www.lenovo.com/us/en/compliance/eco-declaration
European Union RoHS
This Lenovo product, with included parts (cables, cords, and so on) meets the requirements of Directive
2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic
equipment ("RoHS recast" or "RoHS 2").
For more information about Lenovo worldwide compliance on RoHS, go to:
https://www.lenovo.com/rohs-communication
Turkish RoHS
The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use
of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE).
Appendix C. Compliance and TCO Certified information 73
Ukraine RoHS
India RoHS
RoHS compliant as per E-Waste (Management) Rules.
Mainland China RoHS
74 M90n-1 User Guide
Taiwan RoHS
Electromagnetic emission notices
Federal Communications Commission (FCC) Supplier’s Declaration of
Conformity
The following information refers to ThinkCentre M90n-1, machine types: 11AD, 11AE, 11AF, and 11AG.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
Appendix C. Compliance and TCO Certified information 75
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult an authorized dealer or service representative for help.
Lenovo is not responsible for any radio or television interference caused by using other than recommended
cables and connectors or by unauthorized changes or modifications to this equipment. Unauthorized
changes or modifications could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Responsible Party:
Lenovo (United States) Incorporated
7001 Development Drive
Morrisville, NC 27560
Email: FCC@lenovo.com
Locate the FCC ID or IC Certification information
You can find the FCC and IC Certification information through one of the following methods:
• Through an electronic-label screen (E-label screen) preinstalled on your computer. To view the E-label
screen, see “” on page .
• On a physical label attached to the outside of your computer shipping carton.
Industry Canada compliance statement
CAN ICES-3(B)/NMB-3(B)
European Union conformity
EU Contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia
Compliance with the EMC Directive
This product is in conformity with the protection requirements of EU Council Directive 2014/30/EU on the
approximation of the laws of the Member States relating to electromagnetic compatibility.
76 M90n-1 User Guide
This product has been tested and found to comply with the limits for Class B equipment according to
European Standards harmonized in the Directives in compliance. The Class B requirements for equipment
are intended to offer adequate protection to broadcast services within residential environments.
EU ErP (EcoDesign) Directive (2009/125/EC) - external power adapters (Regulation (EU) 2019/1782)
Lenovo products are designed to work with a range of compatible power adapters. Access https://
www.lenovo.com/us/en/compliance/eu-doc to view the compatible power adapters. For the detailed power
adapter specifications for your computer, go to https://support.lenovo.com.
German Class B compliance statement
Hinweis zur Einhaltung der Klasse B zur elektromagnetischen Verträglichkeit
Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie zur elektromagnetischen
Verträglichkeit Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-
Mitgliedsstaaten und hält die Grenzwerte der Klasse B der Norm gemäß Richtlinie.
Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu
betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden. Lenovo
übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne
Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne
Empfehlung der Lenovo gesteckt/eingebaut werden.
Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit von
Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische Verträglichkeit von
Geräten), bzw. der EU Richtlinie 2014/30/EU, der EU Richtlinie 2014/53/EU Artikel 3.1b), für Geräte der
Klasse B.
Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen -
CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo
(Deutschland) GmbH, Meitnerstr. 9, D-70563 Stuttgart.
Japan VCCI Class B compliance statement
Japan compliance statement for products which connect to the power
mains with rated current less than or equal to 20 A per phase
Japan notice for ac power cord
The ac power cord shipped with your product can be used only for this specific product. Do not use the ac
power cord for other devices.
Appendix C. Compliance and TCO Certified information 77
Other compliance and TCO Certified information of countries and
regions
This section provides other compliance information about Lenovo products.
Certification-related information
Product name: ThinkCentre M90n-1
Machine types: 11AD, 11AE, 11AF, and 11AG
The latest compliance information is available at:
https://www.lenovo.com/compliance
TCO Certified
Selected models are TCO Certified and bear the TCO Certified logo.
Note: TCO Certified is an international third-party sustainability certification for IT products. For details, go
to https://www.lenovo.com/us/en/compliance/tco.
Export classification notice
This product is subject to the United States Export Administration Regulations (EAR) and has an Export
Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the embargoed
countries in the EAR E1 country list.
Lenovo product service information for Taiwan
Taiwan precautionary vision statement
警語：使用過度恐傷害視力
注意事項：
• 使用30分鐘請休息10分鐘。
• 未滿2歲幼兒不看螢幕，2歲以上每天看螢幕不要超過1小時。
Keyboard and mouse compliance statement for Taiwan
Eurasian compliance mark
Brazil audio notice
Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.
78 M90n-1 User Guide
ENERGY STAR model information
ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of
Energy aimed at saving money and protecting the environment through energy efficient products and
practices.
Lenovo is proud to offer our customers products with an ENERGY STAR compliant designation. The
following machine types have been designed and tested to conform to the ENERGY STAR program
requirement for computers at the time of manufacture.
11AD, 11AE, 11AF, and 11AG
For more information about Lenovo ENERGY STAR certified products, go to:
https://www.lenovo.com/us/en/social_responsibility/energy/
By using ENERGY STAR compliant products and taking advantage of the power management features of
your computer, you reduce the consumption of electricity. Reduced electrical consumption contributes to
potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions.
For more information about ENERGY STAR, go to:
https://www.energystar.gov
Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To
help in this endeavor, Lenovo has preset a default power plan. To change the power plan, see “Set the power
plan” on page 11.
Appendix C. Compliance and TCO Certified information 79
80 M90n-1 User Guide
Appendix D. Notices and trademarks
Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult
your local Lenovo representative for information on the products and services currently available in your
area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that
Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service
that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's
responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent programs covering subject matter described in this document.
The furnishing of this document does not give you any license to these patents. You can send license
inquiries, in writing, to:
Lenovo (United States), Inc.
1009 Think Place - Building One
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to
you.
Changes are made periodically to the information herein; these changes will be incorporated in new editions
of the publication. To provide better service, Lenovo reserves the right to improve and/or modify the
products and software programs described in the manuals included with your computer, and the content of
the manual, at any time without additional notice.
The software interface and function and hardware configuration described in the manuals included with your
computer might not match exactly the actual configuration of the computer that you purchase. For the
configuration of the product, refer to the related contract (if any) or product packing list, or consult the
distributor for the product sales. Lenovo may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligation to you.
The products described in this document are not intended for use in implantation or other life support
applications where malfunction may result in injury or death to persons. The information contained in this
document does not affect or change Lenovo product specifications or warranties. Nothing in this document
shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or
third parties. All information contained in this document was obtained in specific environments and is
presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without
incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in
any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the
materials for this Lenovo product, and use of those Web sites is at your own risk.
© Copyright Lenovo 2019, 2020 81
Any performance data contained herein was determined in a controlled environment. Therefore, the result
obtained in other operating environments may vary significantly. Some measurements may have been made
on development-level systems and there is no guarantee that these measurements will be the same on
generally available systems. Furthermore, some measurements may have been estimated through
extrapolation. Actual results may vary. Users of this document should verify the applicable data for their
specific environment.
This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux
agreement(s) which may accompany software included with this product. Lenovo may update this document
at any time without notice.
For the latest information or any questions or comments, contact or visit the Lenovo Web site:
https://support.lenovo.com
Trademarks
LENOVO, LENOVO logo, THINKCENTRE, and THINKCENTRE logo are trademarks of Lenovo. Intel is a
trademark of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Microsoft and Windows
are trademarks of the Microsoft group of companies. DisplayPort and VESA are trademarks of the Video
Electronics Standards Association. The terms HDMI and HDMI High-Definition Multimedia Interface are
trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. Wi-Fi
is a registered trademark of Wi-Fi Alliance. USB-C is a trademark of USB Implementers Forum. All other
trademarks are the property of their respective owners. © 2020 Lenovo.
82 M90n-1 User Guide
