Table of Contents
- Safety information
- About this guide
- STRIX B250F GAMING specifications summary
- Package contents
- Installation tools and components
- Chapter 1: Product Introduction
- Chapter 2: Basic Installation
- Chapter 3: BIOS Setup
- 3.1 Knowing BIOS
- 3.2 BIOS setup program
- 3.3 My Favorites
- 3.4 Main menu
- 3.5 Ai Tweaker menu
- 3.6 Advanced menu
- 3.6.1 Platform Misc Configuration
- 3.6.2 CPU Configuration
- 3.6.3 System Agent (SA) Configuration
- 3.6.4 PCH Configuration
- 3.6.5 PCH Storage Configuration
- 3.6.6 PCH-FW Configuration
- 3.6.7 Onboard Devices Configuration
- 3.6.8 APM Configuration
- 3.6.9 Network Stack Configuration
- 3.6.10 HDD/SSD SMART Information
- 3.6.11 USB Configuration
- 3.7 Monitor menu
- 3.8 Boot menu
- 3.9 Tool menu
- 3.10 Exit menu
- 3.11 Updating BIOS
- Appendix
ASUS ROG STRIX B250F GAMING User Manual
Displayed below is the user manual for ROG STRIX B250F GAMING by ASUS which is a product in the Motherboards category. This manual has pages.
Related Manuals
Motherboard
STRIX B250F
GAMING
ii
E12379
Second Edition
December 2016
Copyright© 2016 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
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Products and corporate names appearing in this manual may or may not be registered trademarks or
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owners’ benet, without intent to infringe.
Offer to Provide Source Code of Certain Software
This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.
Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either
(1) for free by downloading it from https://www.asus.com/support/
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In your request please provide the name, model number and version, as stated in the About Box of the
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archives, etc. to this email address).
iii
Contents
Safety information ....................................................................................................... v
About this guide ......................................................................................................... vi
STRIX B250F GAMING specications summary ................................................... viii
Package contents ...................................................................................................... xii
Installation tools and components ......................................................................... xiii
Chapter 1: Product Introduction
1.1 Motherboard overview ............................................................................... 1-1
1.1.1 Before you proceed ..................................................................... 1-1
1.1.2 Motherboard layout ..................................................................... 1-2
1.1.3 Central Processing Unit (CPU) ................................................... 1-4
1.1.4 System memory .......................................................................... 1-5
1.1.5 Expansion slots ........................................................................... 1-7
1.1.6 Headers / Holes .......................................................................... 1-9
1.1.7 Onboard LEDs .......................................................................... 1-11
1.1.8 Internal connectors....................................................................1-12
Chapter 2: Basic Installation
2.1 Building your PC system...........................................................................2-1
2.1.1 Motherboard installation .............................................................. 2-1
2.1.2 CPU installation...........................................................................2-3
2.1.3 CPU heatsink and fan assembly installation ............................... 2-5
2.1.4 DIMM installation......................................................................... 2-7
2.1.5 ATX power connection ................................................................ 2-8
2.1.6 SATA device connection ............................................................. 2-9
2.1.7 Front I/O connector ................................................................... 2-10
2.1.8 Expansion card installation ....................................................... 2-11
2.1.9 M.2 installation .......................................................................... 2-13
2.2 Motherboard rear and audio connections ............................................. 2-14
2.2.1 Rear I/O connection .................................................................. 2-14
2.2.2 Audio I/O connections ............................................................... 2-16
2.3 Starting up for the rst time .................................................................... 2-18
2.4 Turning off the computer ........................................................................ 2-19
Chapter 3: BIOS Setup
3.1 Knowing BIOS ............................................................................................ 3-1
3.2 BIOS setup program .................................................................................. 3-2
3.2.1 EZ Mode......................................................................................3-3
3.2.2 Advanced Mode .......................................................................... 3-4
3.2.3 QFan Control...............................................................................3-7
iv
3.3 My Favorites ............................................................................................... 3-9
3.4 Main menu ................................................................................................ 3-11
3.5 Ai Tweaker menu......................................................................................3-11
3.6 Advanced menu ....................................................................................... 3-12
3.6.1 Platform Misc Conguration ...................................................... 3-12
3.6.2 CPU Conguration .................................................................... 3-12
3.6.3 System Agent (SA) Conguration ............................................. 3-13
3.6.4 PCH Conguration .................................................................... 3-13
3.6.5 PCH Storage Conguration....................................................... 3-13
3.6.6 PCH-FW Conguration ............................................................. 3-13
3.6.7 Onboard Devices Conguration ................................................ 3-13
3.6.8 APM Conguration .................................................................... 3-14
3.6.9 Network Stack Conguration..................................................... 3-14
3.6.10 HDD/SSD SMART Information ................................................. 3-14
3.6.11 USB Conguration .................................................................... 3-14
3.7 Monitor menu ........................................................................................... 3-15
3.8 Boot menu ................................................................................................ 3-15
3.9 Tool menu ................................................................................................. 3-16
3.9.1 ASUS EZ Flash 3 Utility ............................................................ 3-16
3.9.2 Secure Erase ............................................................................ 3-16
3.9.3 ASUS SPD Information ............................................................. 3-17
3.9.4 Graphics Card Information ........................................................ 3-17
3.10 Exit menu .................................................................................................. 3-18
3.11 Updating BIOS .......................................................................................... 3-19
3.11.1 EZ Update ................................................................................. 3-19
3.11.2 ASUS EZ Flash 3 ...................................................................... 3-20
3.11.3 ASUS CrashFree BIOS 3 .......................................................... 3-22
Appendix
Notices .................................................................................................................... A-1
ASUS contact information ...................................................................................... A-5
v
Safety information
Electrical safety
• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
• Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
• Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
vi
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
1. Chapter 1: Product Introduction
This chapter describes the features of the motherboard and the new technology it
supports. It includes description of the switches, jumpers, and connectors on the
motherboard.
2. Chapter 2: Basic Installation
This chapter lists the hardware setup procedures that you have to perform when
installing system components.
3. Chapter 3: BIOS Setup
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
Where to nd more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS website
The ASUS website (www.asus.com) provides updated information on ASUS hardware
and software products.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text Indicates a menu or an item to select.
Italics
Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign
means that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
viii
STRIX B250F GAMING specications summary
CPU
Intel® Socket 1151 for 7th / 6th Generation Core™ i7/Core™ i5/Core™ i3/
Pentium®, and Celeron® Processors*
Supports 14nm CPU
Supports Intel® Turbo Boost Technology 2.0**
* Refer to www.asus.com for Intel® CPU support list.
** The Intel® Turbo Boost Technology 2.0 support depends on the CPU types.
Chipset Intel® B250 Chipset
Memory
4 x DIMM, max. 64GB DDR4 2400* /2133** MHz Non-ECC, Un-buffered
Memory
Dual channel memory architecture
Supports Intel® Extreme Memory Prole (XMP)***
* Due to Intel® chipset limitation, DDR4 2400MHz memory frequency is only
supported by 7th Generation Intel® processors. Higher memory modules will run
at the maximum transfer rate of DDR4 2400MHz.
** Due to Intel® chipset limitation, DDR4 2133MHz and higher memory modules on
6th Generation Intel® processors will run at the maximum transfer rate of DDR4
2133MHz.
*** Refer to www.asus.com for the lastest Memory QVL(Qualied Vendors List).
Expansion slots
1 x PCIe 3.0/2.0 x16_1 slot (at x 16 mode)
1 x PCIe 3.0/2.0 x16_2 slot (max. at x 4 mode)*
4 x PCIe 3.0/2.0 x1 slots
* PCIe x16_2 slot shares bandwidth with PCIe x1_2 and PCIe x1_3 slots. When
PCIe x1_2 and PCIe x1_3 slots are occupied, PCIe x16_2 slot runs at x2 mode.
VGA
Integrated Graphics Processor- Intel® HD Graphics support
Multi-VGA output support: DisplayPort/HDMI/DVI ports
Supports DisplayPort 1.2* with max. resolution of 4096 x 2304@60Hz
Supports HDMI 1.4b with max. resolution of 4096 x 2160@24Hz
Supports DVI with max. resolution of 1920 x 1200@60Hz
Supports Intel® InTru™ 3D/Quick Sync Video/Clear Video HD Technology/
Insider™
Supports up to 3 displays simultaneously
Maximum shared memory of 1024 MB
* DP 1.2 Multi-Stream Transport compliant, supports DP 1.2 monitor daisy chain
up to 3 displays
Multi-GPU
support
Supports AMD® 2-Way CrossFireX™ Technology
USB
Intel® B250 Chipset
- 6 x USB 3.0 ports (2 ports at back panel [blue], 4 ports at mid-board)
- 6 x USB 2.0 ports (4 ports at back panel, 2 ports at mid-board)*
ASMedia® USB 3.1 controller**
- 2 x USB 3.1 ports (1 x Type-A [red] and 1 x Type-C ports at back panel)
* 2 x USB 2.0 port at mid-board shares with ROG extension (ROG_EXT) port.
** Supports 3A power output
(continued on the next page)
ix
(continued on the next page)
STRIX B250F GAMING specications summary
Rear Panel I/O
Ports
2 x USB3.1 ports (1 x typeA [red] and 1 x Type C)
4 x USB2.0 ports
1 x DVI port
1 x HDMI port
1 x DP port
1 x PS/2 keyboard/mouse combo port
2 x USB 3.0 ports [blue]
1 x Anti-surge LAN (RJ45) port
5 x Audio jacks
1 x Optical S/PDIF out
Storage
Intel® B250 Chipset with Intel® Rapid Storage Technology 15 support
- 6 x SATA 6Gb/s ports
- 1 x M.2_1 Socket 3 with M key, type 2242/2260/2280 storage devices
support (SATA mode)*
- 1 x M.2_2 Socket 3 with M key, type 2242/2260/2280/22110 storage
devices support (PCIE 3.0 x 4 mode), supports Intel® Optane™ Memory**
* The M.2_1 socket shares SATA_1 port when using M.2 SATA mode device.
Adjust BIOS settings to use a SATA device.
** Intel® Optane™ Technology is only supported when using 7th Generation Intel®
Processors. Before using Intel® Optane™ memory modules, ensure that you
have updated your motherboard drivers and BIOS to the latest version from
ASUS support website.
Audio
SupremeFX S1220A 8-Channel High Denition Audio CODEC
- Supports up to 32-Bit/192kHz playback*
- Impedance sense for front and rear headphone outputs
- High quality 120dB SNR stereo playback output and 113dB SNR recording
input
- SupremeFX Shielding Technology
- Dual Headpone Ampliers
- Jack-detection, Multi-streaming, and Front Panel Jack-retasking
- Optical S/PDIF out port at back panel
Audio Features
- Sonic Radar III
- Sonic Studio III
* Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for
8-channel audio and due to Windows® 7 limitations, 32-bit playback is
unavailable for Windows® 7.
LAN
Intel® I219-V Gigabit LAN- Dual interconnect between the integrated Media
Access Controller (MAC) and physical layer (PHY)
Anti-surge LANGuard
ROG GameFirst Technology
x
(continued on the next page)
STRIX B250F GAMING specications summary
ROG Exclusive
Features
ROG RAMCache II
ROG GameFirst IV*
ROG Overwolf
ROG CPU-Z
ROG CloneDrive
* ROG GameFirst IV is only available for Windows® 10/8.1 64-bit.
ASUS Special
Features
Performance Optimization
- DIGI + VRM
- GPU Boost
- Fan Xpert 4 featuring Fan Auto Tuning function and multiple thermistors
selection for optimized system cooling control
- AI Suite 3
Gamers Guardian
- SafeSlot
- DIGI+ VRM
- DRAM Overcurrent Protection
- ESD Guards on LAN, Audio, KBMS, and USB3.0/2.0 ports
- Highly Durable Components
- Stainless Steel Back I/O
ASUS EZ DIY
- ASUS EZ Flash 3
- ASUS CrashFree BIOS 3
ASUS Q-Design
- Q-Shield
- Q-LED (CPU, DRAM, VGA, Boot Device LED)
- Q-Slot
- Q-DIMM
ASUS Exclusive Features
- AURA Lightning Control
- 3D Printing Friendly Design
- AI Charger
Internal I/O
connectors
2 x USB 3.0 connectors support additional 4 USB 3.0 ports
1 x USB 2.0 connector supports additional 2 USB 2.0 ports (one connector
via ROG_EXT header)
6 x SATA 6Gb/s connectors
1 x ROG extension (ROG_EXT) header
1 x 4-Pin AIO_PUMP fan connector
1 x 4-Pin CPU fan connector
1 x 4-Pin CPU_OPT fan connector
2 x 4-Pin Chassis fan connectors
1 x 5-Pin Extension fan connector
1 x 24-pin EATX power connector
xi
STRIX B250F GAMING specications summary
Internal I/O
connectors
1 x 8-pin EATX 12V power connector
1 x M.2_2 Socket 3 for M Key, type 2242/2260/2280/22110 storage devices
support (Supports PCIE mode only)
1 x M.2_1 Socket 3 for M Key, type 2242/2260/2280 storage devices support
(Supports SATA mode only)
1 x Front panel audio connector (AAFP)
1 x COM connector
1 x RGB Header
1 x TPM connector
1 x System panel connector
1 x Thermal sensor connector
1 x Clear CMOS jumper (2-pin)
BIOS Features
128 Mb Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS 3.0, ACPI 6.0,
Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F6 Qfan Control,
F3 My Favorites, Last Modied log, F12 PrintScreen, and ASUS DRAM SPD
(Serial Presence Detect) memory information
Manageability WfM2.0, DMI3.0, WOL by PME, PXE
Support DVD
contents
Drivers
ASUS Utilities
EZ Update
Anti-virus software (OEM version)
Operating
system support
Windows® 10 64-bit
Windows® 8.1 64-bit*
Windows® 7*
* Windows® 8.1 64-bit and Windows® 7 32/64-bit are only supported when using
6th Generation Intel® Processors.
Form factor ATX Form Factor, 12” x 9.6” (30.5cm x 24.4cm)
• Specications are subject to change without notice.
• Visit the ASUS website for the software manual.
xii
Package contents
Check your motherboard package for the following items.
Motherboard STRIX B250F GAMING
Cables 4 x SATA 6Gb/s cables
1 x RGB LED extension cable
Accessories
1 x I/O shield
1 x ROG cable label
1 x Strix series sticker
1 x 3D Printing Mount
1 x M.2 Screw Package
Application drive Support DVD
Documentation User Guide
If any of the above items is damaged or missing, contact your retailer.
xiii
Installation tools and components
The tools and components listed above are not included in the motherboard package.
PC chassis
Power supply unit
Intel® 1151 compatible CPU Fan
Intel® 1151 CPU
DIMM
SATA hard disk drive
Graphics card
Phillips (cross) screwdriver
SATA optical disc drive (optional)
1 bag of screws
xiv
ASUS STRIX B250F GAMING 1-1
Chapter 1
Product Introduction
1
Chapter 1: Product Introduction
1.1 Motherboard overview
1.1.1 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplugthepowercordfromthewallsocketbeforetouchinganycomponent.
• Beforehandlingcomponents,useagroundedwriststraportouchasafelygrounded
objectorametalobject,suchasthepowersupplycase,toavoiddamagingthemdue
to static electricity.
• HoldcomponentsbytheedgestoavoidtouchingtheICsonthem.
• Wheneveryouuninstallanycomponent,placeitonagroundedantistaticpadorinthe
bag that came with the component.
• Beforeyouinstallorremoveanycomponent,ensurethattheATXpowersupplyis
switched off or the power cord is detached from the power supply. Failure to do so
maycauseseveredamagetothemotherboard,peripherals,orcomponents.
1-2 Chapter 1: Product Introduction
Chapter 1
Refer to 1.1.8 Internal connectors and 2.2.1 Rear I/O connection for more information
about rear panel connectors and internal connectors.
1.1.2 Motherboard layout
strix b250F GAMING
PCIEX16_1
CPU_LED
DRAM_LED
VGA_LED
BOOT_DEVICE_LED
RGBLED
PCIEX16_2
PCIEX1_2
PCIEX1_3
PCIEX1_4
PCIEX1_1
Intel
I219V
ASM1480
ASM
1142
LANGuard
AAFP
EATXPWR
BATTERY
Super
I/O
COVER
ALC
1220
TPU
22110 2280 2260 2242
M.2_1(SOCKET3)
M.2_2(SOCKET3)
2280 2260 2242
USB910
USB3.1_EA1
USB3.1_EC1
DVI
HDMI DP
T_SENSOR
CLRTC
EXT_FAN
24.4cm(9.6in)
DDR4 DIMM_A1 (64bit, 288-pin module)
DDR4 DIMM_A2 (64bit, 288-pin module)
DDR4 DIMM_B1 (64bit, 288-pin module)
DDR4 DIMM_B2 (64bit, 288-pin module)
SATA6G_2 SATA6G_3SATA6G_1 SATA6G_5 SATA6G_6SATA6G_4
PCIE SATA IRST
X4 X V
PCIE SATA IRST
X V X
KBMS_USB78
LAN_USB3_56
CHA_FAN1 AIO_PUMP
CHA_FAN2
CPU_FAN
CPU_OPT
30.5cm(12in)
LGA1151
DIGI
+VRM
COM
EATX12V
USB3_12
USB3_34
Intel®
B250
TPM
RGB_HEADER
ROG_EXT
128Mb
BIOS
PANEL
SB_PWR
3D
MOUNT
3D
MOUNT
AUDIO
USB1112
2 31 4 5 62
149 131516171920 18
1
7
8
9
10
11
12
3
8
2
ASUS STRIX B250F GAMING 1-3
Chapter 1
Layout contents
Connectors/Jumpers/Buttons and switches/Slots Page
1. ATXpowerconnectors(24-pinEATXPWR,8-pinEATX12V) 1-17
2. CPU,CPUoptional,AIOpump,extension,andchassisfanconnectors
(4-pinCPU_FAN,4-pinCPU_OPT,4-pinAIO_PUMP,5-pinEXT_FAN,
4-pinCHA_FAN1~2)
1-16
3. M.2sockets(M.2_1~2) 1-20
4. LGA1151CPUsocket 1-4
5. DDR4DIMMslots 1-5
6. POSTStateLEDs 1-11
7. RGBLED 1-12
8. 3DMountholes 1-10
9. USB3.0connectors(20-1pinUSB3_12,USB3_34) 1-13
10, Intel®SerialATA6Gb/sconnectors(7-pinSATA6G_1~6) 1-13
11. StandbypowerLED(SB_PWR) 1-11
12. ClearRTCRAMjumper(2-pinCLRTC) 1-9
13. Systempanelconnector(20-5pinPANEL) 1-18
14. Thermalsensorcableconnector(2-pinT_SENSOR) 1-19
15. USB2.0connector(10-1pinUSB1112) 1-15
16. ROGExtensionconnector(18-1pinROG_EXT) 1-14
17. TPMconnector(14-1pinTPM) 1-14
18. RGBheader(4-pinRGB_HEADER) 1-21
19. Serialportconnector(10-1pinCOM) 1-19
20. Frontpanelaudioconnector(10-1pinAAFP) 1-12
1-4 Chapter 1: Product Introduction
Chapter 1
1.1.3 Central Processing Unit (CPU)
ThemotherboardcomeswithasurfacemountLGA1151socketdesignedforthe7th/6th
GenerationIntel®Core™i7/Intel®Core™i5/Intel®Core™i3,Pentium®,andCeleron®
processors.
• EnsurethatallpowercablesareunpluggedbeforeinstallingtheCPU.
• Uponpurchaseofthemotherboard,ensurethatthePnPcapisonthesocketand
thesocketcontactsarenotbent.ContactyourretailerimmediatelyifthePnPcap
ismissing,orifyouseeanydamagetothePnPcap/socketcontacts/motherboard
components.
• Keepthecapafterinstallingthemotherboard.ASUSwillprocessReturnMerchandise
Authorization(RMA)requestsonlyifthemotherboardcomeswiththecaponthe
LGA1151socket.
• Theproductwarrantydoesnotcoverdamagetothesocketcontactsresultingfrom
incorrectCPUinstallation/removal,ormisplacement/loss/incorrectremovalofthePnP
cap.
strix b250F GAMING
STRIX B250F GAMING CPU socket LGA1151
ASUS STRIX B250F GAMING 1-5
Chapter 1
Recommended memory congurations
1.1.4 System memory
ThemotherboardcomeswithfourDDR4(DoubleDataRate4)QuadInlineMemoryModules
(DIMM)slots.
ADDR4moduleisnotcheddifferentlyfromaDDR,DDR2,orDDR3module.DONOT
installaDDR,DDR2,orDDR3memorymoduletotheDDR4slot.
strix b250F GAMING
STRIX B250F GAMING 288-pin DDR4 DIMM sockets
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
1-6 Chapter 1: Product Introduction
Chapter 1
• YoumayinstallvaryingmemorysizesinChannelA,andChannelB.Thesystem
mapsthetotalsizeofthelower-sizedchannelforthedual-channelconguration.Any
excessmemoryfromthehigher-sizedchannelisthenmappedforsingle-channel
operation.
• Duetothememoryaddresslimitationon32-bitWindows®OS,whenyouinstall4GB
ormorememoryonthemotherboard,theactualusablememoryfortheOScanbe
about3GBorless.Foreffectiveuseofmemory,werecommendthatyoudoanyofthe
following:
a) Useamaximumof3GBsystemmemoryifyouareusinga32-bitWindows®OS.
b) Installa64-bitWindows®OSwhenyouwanttoinstall4GBormoreonthe
motherboard.
c) Formoredetails,refertotheMicrosoft® support site at http://support.microsoft.
com/kb/929605/en-us.
• ThedesignoftheDIMMfanmayvary.EnsurethattheDIMMfantstothe
motherboard
• ThedefaultmemoryoperationfrequencyisdependentonitsSerialPresenceDetect
(SPD),whichisthestandardwayofaccessinginformationfromamemorymodule.
Underthedefaultstate,somememorymodulesforoverclockingmayoperateata
lowerfrequencythanthevendor-markedvalue.
• Forsystemstability,useamoreefcientmemorycoolingsystemtosupportafull
memoryload(4DIMMs)oroverclockingcondition.
• Memorymoduleswithmemoryfrequencyhigherthan2133MHzandtheir
correspondingtimingortheloadedXMPproleisnottheJEDECmemorystandard.
ThestabilityandcompatibilityofthememorymodulesdependontheCPU’s
capabilitiesandotherinstalleddevices.
• AlwaysinstalltheDIMMSwiththesameCASLatency.Foranoptimumcompatibility,
werecommendthatyouinstallmemorymodulesofthesameversionordatacode
(D/C)fromthesamevendor.Checkwiththevendortogetthecorrectmemory
modules.
• ASUSexclusivelyprovideshyperDIMMsupportfunction.
• HyperDIMMsupportissubjecttothephysicalcharacteristicsofindividualCPUs.Load
theX.M.P.orD.O.C.P.settingsintheBIOSforthehyperDIMMsupport.
• VisittheASUSwebsiteforthelatestQVL.
Memory congurations
Youmayinstall1GB,2GB,4GB,8GBand16GBunbufferedandnon-ECCDDR4DIMMs
intotheDIMMsockets.
ASUS STRIX B250F GAMING 1-7
Chapter 1
1.1.5 Expansion slots
Unplugthepowercordbeforeaddingorremovingexpansioncards.Failuretodosomay
cause you physical injury and damage motherboard components.
Slot No. Slot Description
1PCIex1_1slot
2PCIex16_1slot
3PCIex1_2slot
4 PCIex16_2slot
5 PCIex1_3slot
6PCIex1_4slot
STRIX B250F GAMING
PCIEX16_1
PCIEX16_2
PCIEX1_2
PCIEX1_3
PCIEX1_4
PCIEX1_1
1-8 Chapter 1: Product Introduction
Chapter 1
• WerecommendthatyouprovidesufcientpowerwhenrunningCrossFireX™mode.
• ConnectachassisfantothemotherboardconnectorlabeledCHA_FAN1-2when
usingmultiplegraphicscardsforbetterthermalenvironment.
IRQ assignments for this motherboard
A B C D
PCIex1_1 – – – shared
PCIex16_1 shared – – –
PCIex1_2 – – – shared
PCIex16_2 shared – – –
PCIex1_3 – – shared –
PCIex1_4 – shared – –
XHCIController shared – – –
SATAController shared – – –
HDAudio shared – – –
SMBUSController shared – – –
IntelLani219V shared – – –
ASMedia1142 – – shared –
ASUS STRIX B250F GAMING 1-9
Chapter 1
1.1.6 Headers / Holes
1. Clear RTC RAM (2-pin CLRTC)
ThisheaderallowsyoutocleartheCMOSRTCRAMdataofthesystemsetup
informationsuchasdate,time,andsystempasswords.
strix b250F GAMING
STRIX B250F GAMING Clear RTC RAM
CLRTC
+3V_BAT
GND
PIN 1
ToerasetheRTCRAM:
1. TurnOFFthecomputerandunplugthepowercord.
2. Useametalobjectsuchasascrewdrivertoshortthetwopins.
3. PlugthepowercordandturnONthecomputer.
4. Holddownthe<Del>keyduringthebootprocessandenterBIOSsetuptore-enter
data.
Ifthestepsabovedonothelp,removetheonboardbatteryandshortthetwopinsagainto
cleartheCMOSRTCRAMdata.AfterclearingtheCMOS,reinstallthebattery.
1-10 Chapter 1: Product Introduction
Chapter 1
2. 3D Mount holes
Createa3Dprintoutandsecureittothese3DMountholesforapersonalized
motherboard.
• Download3Dsourcelesathttp://www.asus.com.
• Usethebundled3Dprintingmountscrewstoinstallthe3Dprintouts.
strix b250F GAMING
STRIX B250F GAMING 3D Printing Mount
3D Mount
3D Mount
ASUS STRIX B250F GAMING 1-11
Chapter 1
1.1.7 Onboard LEDs
1. POST State LEDs
ThePOSTStateLEDsprovidethestatusofthesekeycomponentsduringPOST
(Power-OnSelf-Test):CPU,memorymodules,VGAcard,andharddiskdrives.Ifan
errorisfound,thecriticalcomponent’sLEDstayslitupuntiltheproblemissolved.
2. Standby Power LED (SB_PWR)
ThemotherboardcomeswithastandbypowerLED.TheLEDlightsuptoindicatethat
thesystemisON,insleepmode,orinsoft-offmode.Thisisareminderthatyoushould
shutdownthesystemandunplugthepowercablebeforeremovingorplugginginany
motherboardcomponent.TheillustrationbelowshowsthelocationoftheonboardLED.
strix b250F GAMING
STRIX B250F GAMING CPU/DRAM/
BOOT_DEVICE/VGA LED
CPU_LED
DRAM_LED
VGA_LED
BOOT_DEVICE_LED
strix b250F GAMING
STRIX B250F GAMING Onboard LED
SB_PWR
ON
Standby Power Powered Off
OFF
1-12 Chapter 1: Product Introduction
Chapter 1
3. RGB LED
TheRGBLEDlightingcontrolprovidesseverallightingschemes,whichallowyou
tocustomizeyourfavoriteLEDeffect.YoucansetyourfavoriteLEDeffecttocast
astunningmulti-colorglowacrossyourbuild,changeshadestoindicateCPU
temperature,pulsateintimetothebeatofyourmusic,orsetyourfavoritecolorfor
eachpairofLEDs.
strix b250F GAMING
STRIX B250F GAMING RGB LED Lighting
RGB LED(Bottom)
RGB1
RGB2
RGB3
RGB4
RGB5
RGB6
RGB7
RGB8
RGB9
RGB10
RGB11
RGB12
1.1.8 Internal connectors
1. Front panel audio connector (10-1 pin AAFP)
Thisconnectorisforachassis-mountedfrontpanelaudioI/OmodulethatsupportsHD
Audio.ConnectoneendofthefrontpanelaudioI/Omodulecabletothisconnector.
Werecommendthatyouconnectahigh-denitionfrontpanelaudiomoduletothis
connectortoavailofthemotherboard’shigh-denitionaudiocapability.
strix b250F GAMING
STRIX B250F GAMING Front panel audio connector
AAFP
AGND
NC
SENSE1_RETUR
SENSE2_RETUR
PORT1 L
PORT1 R
PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
ASUS STRIX B250F GAMING 1-13
Chapter 1
2. Intel® Serial ATA 6 Gb/s connectors (7-pin SATA 6G_1~6)
TheseconnectorsconnecttoSerialATA6Gb/sharddiskdrivesviaSerialATA6Gb/s
signal cables.
SATA6G_4
GND
RSATA_TXP4
RSATA_TXN4
GND
RSATA_RXN4
RSATA_RXP4
GND
SATA6G_5
GND
RSATA_TXP5
RSATA_TXN5
GND
RSATA_RXN5
RSATA_RXP5
GND
SATA6G_1
GND
RSATA_TXP1
RSATA_TXN1
GND
RSATA_RXN1
RSATA_RXP1
GND
SATA6G_2
GND
RSATA_TXP2
RSATA_TXN2
GND
RSATA_RXN2
RSATA_RXP2
GND
SATA6G_6
GND
RSATA_TXP6
RSATA_TXN6
GND
RSATA_RXN6
RSATA_RXP6
GND
SATA6G_3
GND
RSATA_TXP3
RSATA_TXN3
GND
RSATA_RXN3
RSATA_RXP3
GND
strix b250F GAMING
STRIX B250F GAMING Intel® SATA 6.0Gb/s connectors
A
A B
B
3. USB 3.0 connectors (20-1 pin USB3_12, USB3_34)
TheseconnectorsallowyoutoconnectaUSB3.0moduleforadditionalUSB3.0front
orrearpanelports.WithaninstalledUSB3.0module,youcanenjoyallthebenetsof
USB3.0includingfasterdatatransferspeedsofupto5Gb/s,fasterchargingtimefor
USB-chargeabledevices,optimizedpowerefciency,andbackwardcompatibilitywith
USB2.0.
TheUSB3.0moduleispurchasedseparately.
strix b250F GAMING
STRIX B250F GAMING USB3.0 connectors
USB3_12
USB3+5V
IntA_P1_SSRX-
IntA_P1_SSRX+
GND
IntA_P1_SSTX-
IntA_P1_SSTX+
GND
IntA_P1_D-
IntA_P1_D+
GND
PIN 1
USB3+5V
IntA_P2_SSRX-
IntA_P2_SSRX+
GND
IntA_P2_SSTX-
IntA_P2_SSTX+
GND
IntA_P2_D-
IntA_P2_D+
USB3_34
GND
IntA_P1_D+
IntA_P1_D-
GND
IntA_P1_SSTX+
IntA_P1_SSTX-
GND
IntA_P1_SSRX+
IntA_P1_SSRX-
USB3+5V
PIN 1
IntA_P2_D+
IntA_P2_D-
GND
IntA_P2_SSTX+
IntA_P2_SSTX-
GND
IntA_P2_SSRX+
IntA_P2_SSRX-
USB3+5V
A
B
A
B
1-14 Chapter 1: Product Introduction
Chapter 1
4. ROG Extension connector (18-1 pin ROG_EXT)
ThisconnectorisfortheFrontBaseandotherROGdevices.
strix b250F GAMING
STRIX B250F GAMING ROG_EXT connectors
ROG_EXT
• TheFrontBaseispurchasedseparately.
• Visitwww.asus.comformoreinformationabouttheFrontBase.
5. TPM connector (14-1 pin TPM)
ThisconnectorsupportsaTrustedPlatformModule(TPM)system,whichsecurely
storeskeys,digitalcerticates,passwordsanddata.ATPMsystemalsohelps
enhancenetworksecurity,protectdigitalidentities,andensuresplatformintegrity.
TheTPMmoduleispurchasedseparately.
TPM
strix b250F GAMING
STRIX B250F GAMING TPM connector
PIN 1
+3VSB
S_PCIRST#_TBD
GND
C_PCICLK_TPM
+3V
+3V
F_CLKRUN
F_SERIRQ
F_FRAME#
F_LAD3
F_LAD2
F_LAD1
F_LAD0
ASUS STRIX B250F GAMING 1-15
Chapter 1
6. USB 2.0 connector (10-1 pin USB1112)
ThisconnectorisforaUSB2.0port.ConnecttheUSBmodulecabletothisconnector,
theninstallthemoduletoaslotopeningatthebackofthesystemchassis.ThisUSB
connectorcomplieswithUSB2.0specicationthatsupportsupto480Mb/sconnection
speed.
DONOTconnecta1394cabletotheUSBconnectors.Doingsowilldamagethe
motherboard!
TheUSB2.0moduleispurchasedseparately.
strix b250F GAMING
STRIX B250F GAMING USB2.0 connector
PIN 1
USB+5V
USB_P11-
USB_P11+
GND
NC
USB+5V
USB_P12-
USB_P12+
GND
USB1112
1-16 Chapter 1: Product Introduction
Chapter 1
7. CPU, CPU optional, AIO pump, extension, and chassis fan connectors (4-pin
CPU_FAN, 4-pin CPU_OPT, 4-pin AIO_PUMP, 5-pin EXT_FAN, 4-pin CHA_
FAN1~2)
Connectthefancablestothefanconnectorsonthemotherboard,ensuringthatthe
black wire of each cable matches the ground pin of the connector.
• DONOTforgettoconnectthefancablestothefanconnectors.Insufcientairow
inside the system may damage the motherboard components. These are not jumpers!
Do not place jumper caps on the fan connectors!
• EnsurethattheCPUfancableissecurelyinstalledtotheCPUfanconnector.
• TheCPU_FANconnectorsupportstheCPUfanofmaximum1A(12W)fanpower.
• TheEXT_FANconnectorsupports2of5thermalsensorsources.
• ConnectthefanofyourwatercoolingkittotheCPU_FANconnector.
AIO_PUMP CHA_FAN1
PWR
FAN IN
FAN PWR
GND
PWM
FAN IN
FAN PWR
GND
A
C
E
F
D
C D
CHA_FAN2
PWM
FAN IN
FAN PWR
GND
F
CPU_OPTCPU_FAN
PWM
FAN IN
FAN PWR
GND
PWM
FAN IN
FAN PWR
GND
BA
B
E
strix b250F GAMING
STRIX B250F GAMING Fan connectors
PIN 1
EXT_FAN
GND
EXTFAN_SMB_DATA
EXTFAN_SMB_CLK
FANCARD_DETECT
EXTFAN_DET
ASUS STRIX B250F GAMING 1-17
Chapter 1
• Forafullyconguredsystem,werecommendthatyouuseapowersupplyunit
(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)andprovidesa
minimumpowerof350W.
• DONOTforgettoconnectthe8-pinEATX12Vpowerplug.Otherwise,thesystemwill
not boot.
• WerecommendthatyouuseaPSUwithahigherpoweroutputwhenconguringa
systemwithmorepower-consumingdevices.Thesystemmaybecomeunstableor
maynotbootupifthepowerisinadequate.
• Ifyouwanttousetwoormorehigh-endPCIExpressx16cards,useaPSUwith
1000Wpowerorabovetoensurethesystemstability.
8. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
TheseconnectorsareforATXpowersupplyplugs.Thepowersupplyplugsare
designedtottheseconnectorsinonlyoneorientation.Findtheproperorientationand
pushdownrmlyuntiltheconnectorscompletelyt.
strix b250F GAMING
STRIX B250F GAMING ATX power connectors
EATX12V
+12V DC
+12V DC
+12V DC
+12V DC
GND
GND
GND
GND
EATXPWR
PIN 1
PIN 1
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
AA B
B
1-18 Chapter 1: Product Introduction
Chapter 1
• System power LED (2-pin or 3-1 pin PLED)
The2-pinor3-1pinconnectorisforthesystempowerLED.Connectthechassis
powerLEDcabletothisconnector.ThesystempowerLEDlightsupwhenyouturnon
thesystempower,andblinkswhenthesystemisinsleepmode.
• Hard disk drive activity LED (2-pin HDD_LED)
This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivityLEDcable
tothisconnector.TheHDDLEDlightsuporasheswhendataisreadfromorwritten
totheHDD.
• System warning speaker (4-pin SPEAKER)
This4-pinconnectorisforthechassis-mountedsystemwarningspeaker.Thespeaker
allows you to hear system beeps and warnings.
• ATX power button/soft-off button (2-pin PWRSW)
Thisconnectorisforthesystempowerbutton.Pressingthepowerbuttonturnsthe
system on or puts the system in sleep or soft-off mode depending on the operating
systemsettings.Pressingthepowerswitchformorethanfoursecondswhilethe
systemisONturnsthesystemOFF.
• Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
9. System panel connector (20-5 pin PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
strix b250F GAMING
STRIX B250F GAMING System panel connector
* Requires an ATX power supply
PLED+
PLED-
PWRBTN#
GND
+5V
GND
GND
Speaker
HDD_LED+
HDD_LED-
GND
RSTCON#
NC
PLED+
PLED-
PIN 1
+PWR_LED-
+PWR_LED-
SPEAKER
PANEL
+HDD_LED-
PWR_SW
RESET
ASUS STRIX B250F GAMING 1-19
Chapter 1
10. Serial port connector (10-1 pin COM)
Thisconnectorisforaserial(COM)port.Connecttheserialportmodulecabletothis
connector,theninstallthemoduletoaslotopeningatthebackofthesystemchassis.
TheCOMmoduleispurchasedseparately.
11. Thermal sensor connector (2-pin T_SENSOR)
Thisconnectorisforthethermistorcablethatmonitorsthetemperatureofthedevices
andthecriticalcomponentsinsidethemotherboard.Connectthethermistorcable
andplacethesensoronthedeviceorthemotherboard’scomponenttodetectits
temperature.
strix b250F GAMING
STRIX B250F GAMING Serial port (COM) connector
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
PIN 1
T_SENSOR
SENSOR IN
GND
strix b250F GAMING
STRIX B250F GAMING T_SENSOR connector
1-20 Chapter 1: Product Introduction
Chapter 1
12. M.2 sockets (M.2_1~2)
These sockets allow you to install M.2SSDmodules.
• M.2_1socketsupportsSATAmodeMKeydesignandtype2242/2260/2280SATA
storagedevices.
• M.2_2socketsupportsPCIe3.0x4MKeydesignandtype2242/2260/2280/22110
PCIestoragedevices.
• M.2_2socketsupportsIRST(Intel®RapidStorageTechnology).
TheM.2SSDmoduleispurchasedseparately.
strix b250F GAMING
STRIX B250F GAMING M.2(SOCKET3)s
M.2_2(SOCKET3)
228022110 2260 2242
M.2_1(SOCKET3)
2280 2260 2242
ASUS STRIX B250F GAMING 1-21
Chapter 1
13. RGB headers (4-pin RGB_HEADER)
ThisconnectorisforRGBLEDstrips.
TheRGBheadersupports5050RGBmulti-colorLEDstrips(12V/G/R/B),withamaximum
powerratingof2A(12V),andnolongerthan2m.
Beforeyouinstallorremoveanycomponent,ensurethattheATXpowersupplyisswitched
offorthepowercordisdetachedfromthepowersupply.Failuretodosomaycausesevere
damagetothemotherboard,peripherals,orcomponents.
• ActuallightingandcolorwillvarywithLEDstrip.
• IfyourLEDstripdoesnotlightup,checkiftheRGBLEDextensioncableandthe
RGBLEDstripisconnectedinthecorrectorientation,andthe12Vconnectoris
alignedwiththe12Vheaderonthemotherboard.
• TheLEDstripwillonlylightupwhenthesystemisoperating.
• TheLEDstripsarepurchasedseparately.
PIN 1
+12V G R B
RGB_HEADER
STRIX B250F GAMING RGB_HEADER connector
strix b250F GAMING
1-22 Chapter 1: Product Introduction
Chapter 1
ASUS STRIX B250F GAMING 2-1
Chapter 2
Basic Installation
2
2.1 Building your PC system
The diagrams in this section are for reference only. The motherboard layout may vary with
models, but the installation steps are the same for all models.
2.1.1 Motherboard installation
1. Install the ASUS I/O Shield to the chassis rear I/O panel.
Chapter 2: Basic Installation
2. Place the motherboard into the chassis, ensuring that its rear I/O ports are aligned to
the chassis’ rear I/O panel.
2-2 Chapter 2: Basic Installation
Chapter 2
3. Place nine (9) screws into the holes indicated by circles to secure the motherboard to
the chassis.
DO NOT overtighten the screws! Doing so can damage the motherboard.
strix b250F GAMING
ASUS STRIX B250F GAMING 2-3
Chapter 2
2.1.2 CPU installation
Ensure that you install the correct CPU designed for LGA1151 socket only. DO NOT install
a CPU designed for LGA1155 and LGA1156 sockets on the LGA1151 socket.
Top of CPU
Bottom of CPU
Bottom of CPU
2-4 Chapter 2: Basic Installation
Chapter 2
Top of CPU
• TheCPUInstallationToolisonlycompatibleonASUSmotherboardswithaIntel®
LGA1151 socket.
• EnsurethattheCPUisrmlyclickedintoplacebeforeinstallingitontotheCPUsocket
on the motherboard.
• UsetheCPUInstallationToolforinstallingtheCPUonly.DONOTdamageorbend
the CPU Installation Tool.
• AlwaysrmlyholdbothsidesoftheCPUInstallationToolwheninstalling,removing,or
picking up the CPU Installation Tool.
• EnsuretouseasoftstablesurfacewheninstallingtheCPUtotheCPUInstallation
Tool to prevent CPU damage.
• ASUSwillnotcoverdamagesresultingfromincorrectCPUinstallation/removal,
incorrect CPU orientation/placement, or other damages resulting from negligence by
the user.
ASUS STRIX B250F GAMING 2-5
Chapter 2
2.1.3 CPU heatsink and fan assembly installation
Apply the Thermal Interface Material to the
CPU heatsink and CPU before you install
the heatsink and fan, if necessary.
To install the CPU heatsink and fan assembly
2-6 Chapter 2: Basic Installation
Chapter 2
To uninstall the CPU heatsink and fan assembly
ASUS STRIX B250F GAMING 2-7
Chapter 2
To remove a DIMM
2.1.4 DIMM installation
2-8 Chapter 2: Basic Installation
Chapter 2
2.1.5 ATX power connection
Ensure to connect the 8-pin power plug.
ASUS STRIX B250F GAMING 2-9
Chapter 2
2.1.6 SATA device connection
OR
2-10 Chapter 2: Basic Installation
Chapter 2
2.1.7 Front I/O connector
USB 2.0
AAFP
To install USB 2.0 connector To install front panel audio connector
USB 3.0
To install USB 3.0 connector
To install front panel connector
ASUS STRIX B250F GAMING 2-11
Chapter 2
2.1.8 Expansion card installation
To install PCIe x16 cards
To install PCIe x1 cards
2-12 Chapter 2: Basic Installation
Chapter 2
To install HYPER M.2 x4 card
The SSD card is purchased separately.
ASUS STRIX B250F GAMING 2-13
Chapter 2
2.1.9 M.2 installation
2-14 Chapter 2: Basic Installation
Chapter 2
2.2 Motherboard rear and audio connections
2.2.1 Rear I/O connection
Rear panel connectors
1. USB 2.0 ports 7. Optical S/PDIF Out port
2. USB 3.1 Type-A port EA1 8. USB 3.0 ports
3. DVI-D port 9. HDMI port
4. PS/2 keyboard/mouse combo port 10. DisplayPort
5. Intel® LAN port (LAN1)* 11. USB 3.1 Type-C port EC1
6. Audio I/O ports**
* and ** : Refer to the tables on the next page for LAN port LEDs and audio port denitions.
1 2 3 4 5
67891011 1
ASUS STRIX B250F GAMING 2-15
Chapter 2
* LAN ports LED indications
ACT/LINK
LED
SPEED
LED
LAN port
Activity Link LED Speed LED
Status Description Status Description
Off No link Off 10 Mbps connection
Orange Linked Orange 100 Mbps connection
Orange (Blinking) Data activity Green 1 Gbps connection
Orange (Blinking
then steady)
Ready to wake up
from S5 mode
You can disable the LAN controllers in BIOS. Due to hardware design, the LAN1 port’s
LEDs may continue to blink even when disabled.
** Audio 2, 4, 6, or 8-channel conguration
Port Headset
2-channel 4-channel 6-channel 8-channel
Light Blue Line In Line In Line In Side speaker
Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out
Pink Mic In Mic In Mic In Mic In
Orange – – Center/Subwoofer Center/Subwoofer
Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out
2-16 Chapter 2: Basic Installation
Chapter 2
Connect to Headphone and Mic
Connect to Stereo Speakers
2.2.2 Audio I/O connections
Audio I/O ports
Connect to 2 channel Speakers
ASUS STRIX B250F GAMING 2-17
Chapter 2
Connect to 4 channel Speakers
Connect to 6 channel Speakers
If you are using Windows® 8.1/10 platform, use only the light blue audio port for Side
SpeakerOutina6-channelconguration.
2-18 Chapter 2: Basic Installation
Chapter 2
2.3 Starting up for the rst time
1. After making all the connections, replace the system case cover.
2. Ensure that all switches are off.
3. Connect the power cord to the power connector at the back of the system chassis.
4. Connect the power cord to a power outlet that is equipped with a surge protector.
5. Turn on the devices in the following order:
a. Monitor
b. External SCSI devices (starting with the last device on the chain)
c. System power
6. After applying power, the system power LED on the system front panel case lights up.
For systems with ATX power supplies, the system LED lights up when you press the
ATX power button. If your monitor complies with the “green” standards or if it has a
“power standby” feature, the monitor LED may light up or change from orange to green
after the system LED turns on.
The system then runs the power-on self tests (POST). While the tests are running, the
BIOS beeps (refer to the BIOS beep codes table) or additional messages appear on
the screen. If you do not see anything within 30 seconds from the time you turned on
the power, the system may have failed a power-on test. Check the jumper settings and
connections or call your retailer for assistance.
Connect to 8 channel Speakers
ASUS STRIX B250F GAMING 2-19
Chapter 2
BIOS Beep Description
One short beep VGA detected
Quick boot set to disabled
No keyboard detected
One continuous beep followed by two
short beeps then a pause (repeated)
No memory detected
One continuous beep followed by three
short beeps
No VGA detected
One continuous beep followed by four
short beeps
Hardware component failure
7. At power on, hold down the <Delete> key to enter the BIOS Setup. Follow the
instructions in Chapter 3.
2.4 Turning off the computer
While the system is ON, press the power button for less than four seconds to put the system
on sleep mode or soft-off mode, depending on the BIOS setting. Press the power switch
for more than four seconds to let the system enter the soft-off mode regardless of the BIOS
setting.
2-20 Chapter 2: Basic Installation
Chapter 2
ASUS STRIX B250F GAMING 3-1
Chapter 3
BIOS Setup
3
3.1 Knowing BIOS
The new ASUS UEFI BIOS is a Unied Extensible Interface that complies with UEFI
architecture, offering a user-friendly interface that goes beyond the traditional keyboard-
only BIOS controls to enable a more exible and convenient mouse input. You can easily
navigate the new UEFI BIOS with the same smoothness as your operating system. The
term “BIOS” in this user manual refers to “UEFI BIOS” unless otherwise specied.
BIOS (Basic Input and Output System) stores system hardware settings such as storage
device conguration, overclocking settings, advanced power management, and boot
device conguration that are needed for system startup in the motherboard CMOS. In
normal circumstances, the default BIOS settings apply to most conditions to ensure
optimal performance. DO NOT change the default BIOS settings except in the following
circumstances:
• An error message appears on the screen during the system bootup and requests you to
run the BIOS Setup.
• You have installed a new system component that requires further BIOS settings or
update.
Inappropriate BIOS settings may result to instability or boot failure. We strongly
recommend that you change the BIOS settings only with the help of a trained service
personnel.
When downloading or updating the BIOS le, rename it as B250FG.CAP for this
motherboard.
Chapter 3: BIOS Setup
3-2 Chapter 3: BIOS Setup
Chapter 3
3.2 BIOS setup program
Use the BIOS Setup to update the BIOS or congure its parameters. The BIOS screen
include navigation keys and brief onscreen help to guide you in using the BIOS Setup
program.
Entering BIOS at startup
To enter BIOS Setup at startup, press <Delete> or <F2> during the Power-On Self Test
(POST). If you do not press <Delete> or <F2>, POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Delete> simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you
failed to enter BIOS Setup using the rst two options.
After doing either of the three options, press <Delete> key to enter BIOS.
• The BIOS setup screens shown in this section are for reference purposes only, and
may not exactly match what you see on your screen.
• Ensure that a USB mouse is connected to your motherboard if you want to use the
mouse to control the BIOS setup program.
• If the system becomes unstable after changing any BIOS setting, load the default
settings to ensure system compatibility and stability. Select the Load Optimized
Defaults item under the Exit menu or press hotkey <F5>. See section 3.10 Exit Menu
for details.
• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and
reset the motherboard to the default value. See section 1.1.6 Headers / Holes for
information on how to erase the RTC RAM via the Clear CMOS jumper.
• The BIOS setup program does not support the Bluetooth devices.
Please visit ASUS website for the detailed BIOS content manual.
BIOS menu screen
The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode.
Press <F7> to change between the two modes.
ASUS STRIX B250F GAMING 3-3
Chapter 3
3.2.1 EZ Mode
By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ
Mode provides you an overview of the basic system information, and allows you to select
the display language, system performance, mode and boot device priority. To access the
Advanced Mode, click Advanced Mode(F7) or press <F7>.
The default screen for entering the BIOS setup program can be changed. Refer to the
Setup Mode item in section Boot menu for details.
The boot device options vary depending on the devices you installed to the system.
Selects the display language
of the BIOS setup program
Displays the CPU/motherboard temperature,
CPU voltage output, CPU/chassis/power fan
speed, and SATA information
Displays the system properties of the selected mode.
Click < or > to switch EZ System Tuning modes
Loads optimized
default settings
Displays the CPU Fan’s speed. Click
the button to manually tune the fans
Saves the changes
and resets the system
Click to display boot devices
Selects the boot device priority
Click to go to Advanced mode
Search on the FAQ
3-4 Chapter 3: BIOS Setup
Chapter 3
3.2.2 Advanced Mode
The Advanced Mode provides advanced options for experienced end-users to congure
the BIOS settings. The gure below shows an example of the Advanced Mode. Refer to the
following sections for the detailed congurations.
To switch from EZ Mode to Advanced Mode, click Advanced Mode(F7) or press the <F7>
hotkey.
Menu items General help
Menu bar Language Hot Keys
Qfan Control(F6)
MyFavorite(F3)
Scroll bar
Pop-up Menu
Conguration elds
Last modied settings Go back to EZ Mode
Displays the CPU temperature,
CPU, and memory voltage output
Search on the FAQ
ASUS STRIX B250F GAMING 3-5
Chapter 3
Menu bar
The menu bar on top of the screen has the following main items:
My Favorites For saving the frequently-used system settings and conguration.
Main For changing the basic system conguration
Ai Tweaker For changing the overclocking settings
Advanced For changing the advanced system settings
Monitor For displaying the system temperature, power status, and changing
the fan settings.
Boot For changing the system boot conguration
Tool For conguring options for special functions
Exit For selecting the exit options and loading default settings
Menu items
The highlighted item on the menu bar displays the specic items for that menu. For example,
selecting Main shows the Main menu items.
The other items (My Favorites, Ai Tweaker, Advanced, Monitor, Boot, Tool, and Exit) on the
menu bar have their respective menu items.
Submenu items
A greater than sign (>) before each item on any menu screen means that the item has a
submenu. To display the submenu, select the item and press <Enter>.
Language
This button above the menu bar contains the languages that you can select for your BIOS.
Click this button to select the language that you want to display in your BIOS screen.
My Favorites(F3)
This button above the menu bar shows all BIOS items in a Tree Map setup. Select frequently-
used BIOS settings and save it to MyFavorites menu.
Refer to section 3.3 My Favorites for more information.
Q-Fan Control(F6)
This button above the menu bar displays the current settings of your fans. Use this button to
manually tweak the fans to your desired settings.
Refer to section 3.2.3 QFan Control for more information.
3-6 Chapter 3: BIOS Setup
Chapter 3
Search on FAQ
Move your mouse over this button to show a QR code, scan this QR code on your mobile
device to connect to the BIOS FAQ web page of the ASUS support website. You can also
scan the following QR code:
Hot keys
This button above the menu bar contains the navigation keys for the BIOS setup program.
Use the navigation keys to select items in the menu and change the settings.
Scroll bar
A scroll bar appears on the right side of a menu screen when there are items that do not t
on the screen. Press the Up/Down arrow keys or <Page Up> / <Page Down> keys to display
the other items on the screen.
General help
At the bottom of the menu screen is a brief description of the selected item. Use <F12> key
to capture the BIOS screen and save it to the removable storage device.
Conguration elds
These elds show the values for the menu items. If an item is user-congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not
user-congurable.
A congurable eld is highlighted when selected. To change the value of a eld, select it and
press <Enter> to display a list of options.
Last Modied button
This button shows the items that you last modied and saved in BIOS Setup.
ASUS STRIX B250F GAMING 3-7
Chapter 3
3.2.3 QFan Control
The QFan Control allows you to set a fan prole or manually congure the operating speed of
your CPU and chassis fans.
Click to select a fan to be
congured Click to activate
PWM Mode
Click to undo the
changes
Click to apply the fan setting
Click to go back to main menu
Select a prole to
apply to your fans
Click to activate DC Mode
Select to manually congure
your fans
3-8 Chapter 3: BIOS Setup
Chapter 3
Conguring fans manually
Select Manual from the list of proles to manually congure your fans’ operating speed.
To congure your fans:
1. Select the fan that you want to congure and to view its current status.
2. Click and drag the speed points to adjust the fans’ operating speed.
3. Click Apply to save the changes then click Exit (ESC).
Speed points Select to manually
congure your fans
ASUS STRIX B250F GAMING 3-9
Chapter 3
3.3 My Favorites
My Favorites is your personal space where you can easily save and access your favorite
BIOS items.
My Favorites comes with several performance, power saving, and fast boot related items by
default. You can personalize this screen by adding or removing items.
3-10 Chapter 3: BIOS Setup
Chapter 3
Adding items to My Favorites
To add BIOS items:
1. Press <F3> on your keyboard or click from the BIOS screen to open
Setup Tree Map screen.
2. On the Setup Tree Map screen, select the BIOS items that you want to save in My
Favorites screen.
3. Select an item from main menu panel, then click the submenu that you want to save as
favorite from the submenu panel and click or press <Enter> on your keyboard.
You cannot add the following items to My Favorite items:
• Items with submenu options
• User-managed items such as language and boot order
• Conguration items such as Memory SPD Information, system time and date.
4. Click Exit (ESC) or press <Esc> key to close Setup Tree Map screen.
5. Go to My Favorites menu to view the saved BIOS items.
Main menu panel
Submenu panel
Selected shortcut
items
Delete all favorite
items
Recover to default
favorite items
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Chapter 3
3.4 Main menu
The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup
program. The Main menu provides you an overview of the basic system information, and
allows you to set the system date, time, language, and security settings.
Security
The Security menu items allow you to change the system security settings.
• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)
RAM to clear the BIOS password. See section 1.1.6 Headers / Holes for information
on how to erase the RTC RAM via the Clear CMOS button.
• The Administrator or User Password items on top of the screen show the default [Not
Installed]. After you set a password, these items show [Installed].
3.5 Ai Tweaker menu
The Ai Tweaker menu items allow you to congure overclocking-related items.
Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect eld
values can cause the system to malfunction
The conguration options for this section vary depending on the CPU and DIMM model you
installed on the motherboard.
CPU Core Ratio
This item allows you to set the CPU core ratio limit per core or synchronize automatically to
all cores. Conguration options: [Auto] [Sync All Cores] [Per Core]
DRAM Frequency [Auto]
This item allows you to set the memory operating frequency. The congurable options vary
with the BCLK (base clock) frequency setting. Select the auto mode to apply the optimized
setting. Conguration options: [Auto] [DDR4-800MHz] - [DDR4-4266MHz]
Selecting a very high memory frequency may cause the system to become unstable! If this
happens, revert to the default setting.
Internal CPU Power Management
The subitems in this menu allow you to set the CPU ratio and their features.
Intel(R) SpeedStep(tm) [Enabled]
This item allows the operating system to dynamically adjust the processor voltage and cores
frequency, resulting to a decreased average power consumption and decreased average
heat production. Conguration options: [Disabled] [Enabled]
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Turbo Mode Parameters
Long Duration Package Power Limit [Auto]
Allows you to limit the Turbo Ratio’s time duration that exceeds the TDP (Thermal
Design Power) for maximum performance. Use the <+> or <-> keys to adjust the value.
The values range from 1 W to 4096 W.
Package Power Time Window [Auto]
Also known as Power Limit 1, this item allows you to maintain the time window for
Turbo Ratio over TDP (Thermal Design Power). Use the <+> or <-> keys to adjust the
value. The values range from 1 to 127 in seconds.
Short Duration Package Power Limit [Auto]
Also known as Power Limit 2, this item allows you to provide rapid protection when
the package power exceeds the Power Limit 1. Use the <+> or <-> keys to adjust the
value. The values range from 1 W to 4095 W.
3.6 Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Be cautious when changing the settings of the Advanced menu items. Incorrect eld values
can cause the system to malfunction.
3.6.1 Platform Misc Conguration
The items in this menu allow you to congure the platform-related features.
3.6.2 CPU Conguration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
The items shown in submenu may be different due to the CPU you installed.
Hyper-threading [Enabled]
The Intel Hyper-Threading Technology allows a hyper-threading processor to appear as two
logical processors to the operating system, allowing the operating system to schedule two
threads or processes simultaneously.
[Enabled] Two threads per activated core are enabled.
[Disabled] Only one thread per activated core is enabled.
CPU Power Management Control
This item allows you to manage and congure the CPU’s power.
Intel(R) SpeedStep(tm) [Auto]
This item allows your system to support more than two frequency ranges.
Conguration options: [Auto] [Disabled] [Enabled]
CPU C-States [Auto]
This item allows you to set the power saving of the CPU states.
Conguration options: [Auto] [Disabled] [Enabled]
ASUS STRIX B250F GAMING 3-13
Chapter 3
CFG lock [Disabled]
This item allows you to enable or disable the CFG lock. Conguration options:
[Disabled] [Enabled]
3.6.3 System Agent (SA) Conguration
The items in this menu allow you to adjust the Link Speed for PEG Port and Multi-Monitor.
3.6.4 PCH Conguration
PCI Express Conguration
This item allows you to congure the PCI Express slots.
PCI-E Speed [Auto]
This item allows your system to automatically select the PCI Express port speed. When
set to [Gen1], the PCI-E port runs at PCI-E 1.0 speed. When set to [Gen2], the PCI-E
port runs at PCI-E 2.0 speed. Conguration options: [Auto] [Gen1] [Gen2]
3.6.5 PCH Storage Conguration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA Port items show Empty if no SATA device is installed to the corresponding SATA port.
SATA Controller(s) [Enabled]
This item allows you to enable or disable the SATA device. Conguration options: [Enabled]
[Disabled]
SMART Self Test [On]
SMART (Self-Monitoring, Analysis and Reporting Technology) is a monitoring system that
shows a warning message during POST (Power-on Self Test) when an error occurs in the
hard disks. Conguration options: [On] [Off]
Hot Plug [Disabled] (SATA6G_1 (Gray) ~ SATA6G_6(Gray))
These items allow you to enable/disable SATA Hot Plug Support. Conguration options:
[Disabled] [Enabled]
3.6.6 PCH-FW Conguration
This item allows you to congure the rmware TPM.
3.6.7 Onboard Devices Conguration
HD Audio Controller [Enabled]
This item allows you to use the Azalia High Denition Audio Controller. Conguration options:
[Disabled] [Enabled]
3-14 Chapter 3: BIOS Setup
Chapter 3
PCIEX16_2 Conguration [Auto]
This item allows you to congure the PCIe x16_2 device settings.
[Auto] Automatically detects the device installed.
(1) When a device is installed in PCIe x1_2 or PCIEx1_3 slot, PCIe x16_2
only runs in X2 Mode.
(2) When there are no devices installed in PCIe x1_2 or PCIe x1_3 slot,
PCIe x16_2 can run in X4 Mode.
[X2 Mode] PCIe x16_2 only runs in X2 Mode. PCIe x1_2 and PCIe x1_3 are enabled.
[X4 Mode] PCIe x16_2 can run in X4 Mode. PCIe x1_2 and PCIe x1_3 are disabled.
RGB LED Lighting [On]
[On] The LEDs will always light up at the S0(Working), S3(Sleep), and S5(Soft
off) states, but not light up at the S4/S5 state when the ErP Ready item is
enabled.
[Off] The LEDs will not light up.
Intel LAN Controller [Enabled]
[Enabled] Enables the Intel LAN controller.
[Disabled] Disables the controller.
Serial Port Conguration
The sub-items in this menu allow you to set the serial port conguration.
3.6.8 APM Conguration
ErP Ready [Disabled]
Allows BIOS to switch off some power at S5 to get the system ready for ErP requirement.
When set to [Enabled], all other PME options will be switched off.
Conguration options: [Enable(S4+S5)] [Enable(S5)] [Disabled]
3.6.9 Network Stack Conguration
The items in this menu allow you to congure Ipv4 / Ipv6 PXE support.
3.6.10 HDD/SSD SMART Information
This menu displays the SMART information of the connected devices.
3.6.11 USB Conguration
The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
USB Single Port Control
This item allows you to enable or disable the individual USB ports.
Refer to section 1.1.2 Motherboard layout for the location of the USB ports.
ASUS STRIX B250F GAMING 3-15
Chapter 3
3.7 Monitor menu
The Monitor menu displays the system temperature/power status, and allows you to change
the fan settings.
Q-Fan Conguration
The subitems in this menu allows you to congure the Q-Fan features.
Qfan Tuning
Click this item to automatically detect the lowest speed and congure the minimum duty cycle
for each fan.
3.8 Boot menu
The Boot menu items allow you to change the system boot options.
Fast Boot [Enabled]
[Enabled] Select to accelerate the boot speed.
[Disabled] Select to go back to normal boot speed.
The following item appears only when you set Fast Boot to [Enabled].
Next Boot after AC Power Loss [Normal Boot]
[Normal Boot] Returns to normal boot on the next boot after AC power loss.
[Fast Boot] Accelerates the boot speed on the next boot after AC power loss.
Setup Mode [EZ Mode]
[Advanced Mode] This item allows you to go to Advanced Mode of the BIOS after POST.
[EZ Mode] This item allows you to go to EZ Mode of the BIOS after POST.
CSM (Compatibility Support Module)
Allows you to congure the CSM (Compatibility Support Module) items to fully support the
various VGA, bootable devices and add-on devices for better compatibility.
Launch CSM [Enabled]
[Auto] The system automatically detects the bootable devices and the add-on
devices.
[Enabled] For better compatibility, enable the CSM to fully support the non-UEFI
driver add-on devices or the Windows® UEFI mode.
[Disabled] Disable the CSM to fully support the Windows® Security Update and
Security Boot.
The following four items appear when you set Launch CSM to [Enabled].
Boot Device Control [UEFI and Legacy OPROM]
Allows you to select the type of devices that you want to boot up. Conguration options:
[UEFI and Legacy OPROM] [Legacy OPROM only] [UEFI only]
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Chapter 3
Boot from Network Devices [Legacy only]
Allows you to select the type of network devices that you want to launch. Conguration
options: [Ignore] [Legacy only] [UEFI driver rst]
Boot from Storage Devices [Legacy Only]
Allows you to select the type of storage devices that you want to launch. Conguration
options: [Ignore] [Legacy only] [UEFI driver rst]
Boot from PCI-E Expansion Devices [Legacy Only]
Allows you to select the type of PCI-E expansion devices that you want to launch.
Conguration options: [Legacy only] [UEFI driver rst]
Secure Boot
Allows you to congure the Windows® Secure Boot settings and manage its keys to protect
the system from unauthorized access and malwares during POST.
Boot Option Priorities
These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices
installed in the system.
To select the boot device during system startup, press <F8> when ASUS Logo appears.
Boot Override
These items displays the available devices. The number of device items that appears on
the screen depends on the number of devices installed in the system. Click an item to start
booting from the selected device.
3.9 Tool menu
The Tool menu items allow you to congure options for special functions. Select an item then
press <Enter> to display the submenu.
3.9.1 ASUS EZ Flash 3 Utility
This item allows you to run ASUS EZ Flash 3. When you press <Enter>, a conrmation
message appears. Use the left/right arrow key to select between [Yes] or [No], then press
<Enter> to conrm your choice.
For more details, refer to section 3.11.2 ASUS EZ Flash 3.
3.9.2 Secure Erase
SSD speeds may lower over time as with any storage medium due to data processing.
Secure Erase completely and safely cleans your SSD, restoring it to factory performance
levels.
ASUS STRIX B250F GAMING 3-17
Chapter 3
To launch Secure Erase, click Tool > Secure Erase on the Advanced mode menu.
Check the ASUS support site for a full list of SSDs tested with Secure Erase. The drive may
become unstable if you run Secure Erase on an incompatible SSD.
• The time to erase the contents of your SSD may take a while depending on its size.
Do not turn off the system during the process.
• Secure Erase is only supported on Intel SATA port. For more information about Intel
SATA ports, refer to section 1.1.2 Motherboard layout of this manual.
Displays the
available SSDs
Status denition:
• Frozen. The frozen state is the result of a BIOS protective measure. The BIOS
guards drives that do not have password protection by freezing them prior to booting.
If the drive is frozen, a power off or hard reset of your PC must be performed to
proceed with the Secure Erase.
• Locked. SSDs might be locked if the Secure Erase process is either incomplete
or was stopped. This may be due to a third party software that uses a different
password dened by ASUS. You have to unlock the SSD in the software before
proceeding with Secure Erase.
3.9.3 ASUS SPD Information
This item allows you to view the DRAM SPD information.
3.9.4 Graphics Card Information
This item displays the information about the graphics card installed in your system.
GPU Post
This item displays the information and recommended conguration for the PCIE slots that the
graphics card is installed in your system.
This feature is only supported on selected ASUS graphics cards.
Bus Interface
This item allows you to select the bus interface. Conguration options: [PCIEX16_1]
[PCIEX16_2]
3-18 Chapter 3: BIOS Setup
Chapter 3
3.10 Exit menu
The Exit menu items allow you to load the optimal default values for the BIOS items, and
save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit
menu.
Load Optimized Defaults
This option allows you to load the default values for each of the parameters on the Setup
menus. When you select this option or if you press <F5>, a conrmation window appears.
Select OK to load the default values.
Save Changes & Reset
Once you are nished making your selections, choose this option from the Exit menu to
ensure the values you selected are saved. When you select this option or if you press <F10>,
a conrmation window appears. Select OK to save changes and exit.
Discard Changes and Exit
This option allows you to exit the Setup program without saving your changes. When you
select this option or if you press <Esc>, a conrmation window appears. Select Yes to
discard changes and exit.
Launch EFI Shell from USB drives
This item allows you to attempt to launch the EFI Shell application (shellx64.e) from one of
the available lesystem devices.
ASUS STRIX B250F GAMING 3-19
Chapter 3
3.11 Updating BIOS
The ASUS website publishes the latest BIOS versions to provide enhancements on system
stability, compatibility,and performance. However, BIOS updating is potentially risky. If
there is no problem using the current version of BIOS, DO NOT manually update the BIOS.
Inappropriate BIOS updating may result to system’s failure to boot. Carefully follow the
instructions in this chapter to update your BIOS when necessary.
Visit http://www.asus.com to download the latest BIOS le for this motherboard.
The following utilities allow you to manage and update the motherboard BIOS setup program.
1. EZ Update: Updates the BIOS in Windows® environment.
2. ASUS EZ Flash 3: Updates the BIOS using a USB ash drive.
3. ASUS CrashFree BIOS 3: Restores the BIOS using the motherboard support DVD or a
USB ash drive when the BIOS le fails or gets corrupted.
3.11.1 EZ Update
The EZ Update is a utility that allows you to update the motherboard BIOS in Windows®
environment.
• EZ Update requires an Internet connection either through a network or an ISP
(Internet Service Provider).
• This utility is available in the support DVD that comes with the motherboard package.
3-20 Chapter 3: BIOS Setup
Chapter 3
3.11.2 ASUS EZ Flash 3
ASUS EZ Flash 3 allows you to download and update to the latest BIOS through the Internet
without having to use a bootable oppy disk or an OS-based utility.
Updating through the Internet varies per region and Internet conditions. Check your local
Internet connection before updating through the Internet.
To update the BIOS by USB:
1. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select
ASUS EZ Flash Utility and press <Enter>.
2. Insert the USB ash disk that contains the latest BIOS le to the USB port.
3. Select via Storage Devices.
4. Press <Tab> to switch to the Drive eld.
5. Press the Up/Down arrow keys to nd the USB ash disk that contains the latest BIOS,
and then press <Enter>.
6. Press <Tab> to switch to the Folder Info eld.
7. Press the Up/Down arrow keys to nd the BIOS le, and then press <Enter> to perform
the BIOS update process. Reboot the system when the update process is done.
ASUS STRIX B250F GAMING 3-21
Chapter 3
• This function can support devices such as a USB ash disk with FAT 32/16 format and
single partition only.
• DO NOT shut down or reset the system while updating the BIOS to prevent system
boot failure!
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
the Load Optimized Defaults item under the Exit menu. See section 3.10 Exit Menu for
details.
To update the BIOS by Internet:
1. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select
ASUS EZ Flash Utility and press <Enter>.
2. Select via Internet.
3. Press the Left/Right arrow keys to select an Internet connection method, and then
press <Enter>.
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
the Load Optimized Defaults item under the Exit menu. See section 3.10 Exit Menu for
details.
4. Follow the onscreen instructions to complete the update.
5. Reboot the system when the update process is done.
3-22 Chapter 3: BIOS Setup
Chapter 3
3.11.3 ASUS CrashFree BIOS 3
The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the
BIOS le when it fails or gets corrupted during the updating process. You can restore a
corrupted BIOS le using the motherboard support DVD or a USB ash drive that contains
the BIOS le.
The BIOS le in the motherboard support DVD may be older than the BIOS le published
on the ASUS ofcial website. If you want to use the newer BIOS le, download the le at
https://www.asus.com/support/ and save it to a USB ash drive.
Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the motherboard support DVD to the optical drive, or the USB ash drive
containing the BIOS le to the USB port.
3. The utility automatically checks the devices for the BIOS le. When found, the utility
reads the BIOS le and enters ASUS EZ Flash 3 automatically.
4. The system requires you to enter BIOS Setup to recover the BIOS setting. To ensure
system compatibility and stability, we recommend that you press <F5> to load default
BIOS values.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
ASUS STRIX B250F GAMING A-1
Appendix
Appendix
Appendix
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference.
• This device must accept any interference received including interference that may cause
undesired operation.
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 interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s 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 to an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
toassurecompliancewithFCCregulations.Changesormodicationstothisunitnot
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
A-2 Appendix
Appendix
IC: Canadian Compliance Statement
ComplieswiththeCanadianICES-003ClassBspecications.ThisdevicecomplieswithRSS
210 of Industry Canada. This Class B device meets all the requirements of the Canadian
interference-causing equipment regulations.
This device complies with Industry Canada license exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Cet appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada.
Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le
fonctionnement est soumis aux deux conditions suivantes :
(1) cet appareil ne doit pas provoquer d’interférences et
(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer
un fonctionnement non souhaité de l’appareil.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
VCCI: Japan Compliance Statement
Class B ITE
KC: Korea Warning Statement
ASUS STRIX B250F GAMING A-3
Appendix
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards
for protecting our environment. We believe in providing solutions for you to be able to
responsibly recycle our products, batteries, other components as well as the packaging
materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling
information in different regions.
Regional notice for California
WARNING! This product may contain chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm. Wash hands after handling.
Google™ License Terms
Copyright© 2016 Google Inc. All Rights Reserved.
LicensedundertheApacheLicense,Version2.0(the“License”);youmaynotusethisle
except in compliance with the License. You may obtain a copy of the License at:
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the
License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
ANY KIND, either express or implied.
SeetheLicenseforthespeciclanguagegoverningpermissionsandlimitationsunderthe
License.
A-4 Appendix
Appendix
Română ASUSTeK Computer Inc. declară că acest dispozitiv se conformează
cerinţelor esenţiale şi altor prevederi relevante ale directivelor conexe. Textul
complet al declaraţiei de conformitate a Uniunii Europene se găseşte la:
www.asus.com/support
Srpski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj u saglasnosti
sa osnovnim zahtevima i drugim relevantnim odredbama povezanih
Direktiva. Pun tekst EU deklaracije o usaglašenosti je dostupan da adresi:
www.asus.com/support
Slovensky Spoločnosť ASUSTeK Computer Inc. týmto vyhlasuje, že toto
zariadenie vyhovuje základným požiadavkám a ostatým príslušným
ustanoveniam príslušných smerníc. Celý text vyhlásenia o zhode pre štáty EÚ
je dostupný na adrese: www.asus.com/support
Slovenščina ASUSTeK Computer Inc. izjavlja, da je ta naprava skladna z
bistvenimi zahtevami in drugimi ustreznimi določbami povezanih direktiv.
Celotno besedilo EU-izjave o skladnosti je na voljo na spletnem mestu:
www.asus.com/support
Español Por la presente, ASUSTeK Computer Inc. declara que este dispositivo
cumple los requisitos básicos y otras disposiciones pertinentes de las
directivas relacionadas. El texto completo de la declaración de la UE de
conformidad está disponible en: www.asus.com/support
Svenska ASUSTeK Computer Inc. förklarar härmed att denna
enhet överensstämmer med de grundläggande kraven och andra
relevanta föreskrifter i relaterade direktiv. Fulltext av EU-försäkran om
överensstämmelse nns på: www.asus.com/support
Українська ASUSTeK Computer Inc. заявляє, що цей пристрій відповідає
основним вимогам та іншим відповідним положенням відповідних
Директив. Повний текст декларації відповідності стандартам ЄС
доступний на: www.asus.com/support
Türkçe AsusTek Computer Inc., bu aygıtın temel gereksinimlerle ve ilişkili
Yönergelerin diğer ilgili koşullarıyla uyumlu olduğunu beyan eder. AB
uygunluk bildiriminin tam metni şu adreste bulunabilir:
www.asus.com/support
Bosanski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj usklađen
sa bitnim zahtjevima i ostalim odgovarajućim odredbama vezanih direktiva.
Cijeli tekst EU izjave o usklađenosti dostupan je na: www.asus.com/support
English ASUSTeK Computer Inc. hereby declares that this device is in
compliance with the essential requirements and other relevant provisions of
related Directives. Full text of EU declaration of conformity is available at:
www.asus.com/support
Français AsusTek Computer Inc. déclare par la présente que cet appareil est
conforme aux critères essentiels et autres clauses pertinentes des directives
concernées. La déclaration de conformité de l’UE peut être téléchargée à
partir du site Internet suivant : www.asus.com/support
Deutsch ASUSTeK Computer Inc. erklärt hiermit, dass dieses Gerät mit
den wesentlichen Anforderungen und anderen relevanten Bestimmungen
der zugehörigen Richtlinien übereinstimmt. Der gesamte Text der EU-
Konformitätserklärung ist verfügbar unter: www.asus.com/support
Italiano ASUSTeK Computer Inc. con la presente dichiara che questo
dispositivo è conforme ai requisiti essenziali e alle altre disposizioni pertinenti
con le direttive correlate. Il testo completo della dichiarazione di conformità
UE è disponibile all’indirizzo: www.asus.com/support
Русский Компания ASUS заявляет, что это устройство соответствует
основным требованиям и другим соответствующим условиям
соответствующих директив. Подробную информацию, пожалуйста,
смотрите на www.asus.com/support
Български С настоящото ASUSTeK Computer Inc. декларира, че това
устройство е в съответствие със съществените изисквания и другите
приложими постановления на свързаните директиви. Пълният текст на
декларацията за съответствие на ЕС е достъпна на адрес:
www.asus.com/support
Hrvatski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj sukladan
s bitnim zahtjevima i ostalim odgovarajućim odredbama vezanih direktiva.
Cijeli tekst EU izjave o sukladnosti dostupan je na: www.asus.com/support
Čeština Společnost ASUSTeK Computer Inc. tímto prohlašuje, že toto
zařízení splňuje základní požadavky a další příslušná ustanovení souvisejících
směrnic. Plné znění prohlášení o shodě EU je k dispozici na adrese:
www.asus.com/support
Dansk ASUSTeK Computer Inc. erklærer hermed, at denne enhed er i
overensstemmelse med hovedkravene og andre relevante bestemmelser i de
relaterede direktiver. Hele EU-overensstemmelseserklæringen kan ndes på:
www.asus.com/support
Nederlands ASUSTeK Computer Inc. verklaart hierbij dat dit apparaat
voldoet aan de essentiële vereisten en andere relevante bepalingen van
de verwante richtlijnen. De volledige tekst van de EU-verklaring van
conformiteit is beschikbaar op: www.asus.com/support
Eesti Käesolevaga kinnitab ASUSTeK Computer Inc, et see seade vastab
asjakohaste direktiivide oluliste nõuetele ja teistele asjassepuutuvatele
sätetele. EL vastavusdeklaratsiooni täielik tekst on saadaval järgmisel
aadressil: www.asus.com/support
Suomi ASUSTeK Computer Inc. ilmoittaa täten, että tämä laite on
asiaankuuluvien direktiivien olennaisten vaatimusten ja muiden tätä
koskevien säädösten mukainen. EU-yhdenmukaisuusilmoituksen koko teksti
on luettavissa osoitteessa: www.asus.com/support
Ελληνικά Με το παρόν, η AsusTek Computer Inc. δηλώνει ότι αυτή η
συσκευή συμμορφώνεται με τις θεμελιώδεις απαιτήσεις και άλλες σχετικές
διατάξεις των Οδηγιών της ΕΕ. Το πλήρες κείμενο της δήλωσης συμβατότητας
είναι διαθέσιμο στη διεύθυνση: www.asus.com/support
Magyar Az ASUSTeK Computer Inc. ezennel kijelenti, hogy ez az eszköz
megfelel a kapcsolódó Irányelvek lényeges követelményeinek és egyéb
vonatkozó rendelkezéseinek. Az EU megfelelőségi nyilatkozat teljes szövege
innen letölthető: www.asus.com/support
Latviski ASUSTeK Computer Inc. ar šo paziņo, ka šī ierīce atbilst saistīto
Direktīvu būtiskajām prasībām un citiem citiem saistošajiem nosacījumiem.
Pilns ES atbilstības paziņojuma teksts pieejams šeit: www.asus.com/support
Lietuvių „ASUSTeK Computer Inc.“ šiuo tvirtina, kad šis įrenginys atitinka
pagrindinius reikalavimus ir kitas svarbias susijusių direktyvų nuostatas. Visą
ES atitikties deklaracijos tekstą galima rasti: www.asus.com/support
Norsk ASUSTeK Computer Inc. erklærer herved at denne enheten er i
samsvar med hovedsaklige krav og andre relevante forskrifter i relaterte
direktiver. Fullstendig tekst for EU-samsvarserklæringen nnes på:
www.asus.com/support
Polski Firma ASUSTeK Computer Inc. niniejszym oświadcza, że
urządzenie to jest zgodne z zasadniczymi wymogami i innymi właściwymi
postanowieniami powiązanych dyrektyw. Pełny tekst deklaracji zgodności UE
jest dostępny pod adresem: www.asus.com/support
Português A ASUSTeK Computer Inc. declara que este dispositivo está em
conformidade com os requisitos essenciais e outras disposições relevantes
das Diretivas relacionadas. Texto integral da declaração da UE disponível em:
www.asus.com/support
ASUS STRIX B250F GAMING A-5
Appendix
ASUS contact information
ASUSTeK COMPUTER INC.
Address 4F, No. 150, Li-Te Road, Peitou, Taipei 112, Taiwan
Telephone +886-2-2894-3447
Fax +886-2-2890-7798
Web site www.asus.com
Technical Support
Telephone +86-21-38429911
Fax +86-21-5866-8722, ext. 9101#
Online support http://qr.asus.com/techserv
ASUS COMPUTER INTERNATIONAL (America)
Address 800 Corporate Way, Fremont, CA 94539, USA
Telephone +1-510-739-3777
Fax +1-510-608-4555
Web site http://www.asus.com/us/
Technical Support
Support fax +1-812-284-0883
Telephone +1-812-282-2787
Online support http://qr.asus.com/techserv
ASUS COMPUTER GmbH (Germany and Austria)
Address Harkort Str. 21-23, 40880 Ratingen, Germany
Fax +49-2102-959931
Web site http://www.asus.com/de
Online contact http://eu-rma.asus.com/sales
Technical Support
Telephone +49-2102-5789555
Support Fax +49-2102-959911
Online support http://qr.asus.com/techserv
A-6 Appendix
Appendix
DECLARATION OF CONFORMITY
Per FCC Part 2 Section 2. 1077(a)
Responsible Party Name: Asus Computer International
Address: 800 Corporate Way, Fremont, CA 94539.
Phone/Fax No: (510)739-3777/(510)608-4555
hereby declares that the product
Product Name : Motherboard
Model Number : STRIX B250F GAMING
Conforms to the following specifications:
FCC Part 15, Subpart B, Unintentional Radiators
Supplementary Information:
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.
Representative Person’s Name : Steve Chang / President
Signature :
Date : Nov. 16, 2016
Ver. 140331