Safety information
Chapter 1: Product Introduction
Chapter 2: Basic Installation
Chapter 3: BIOS Setup
Chapter 4: RAID Support
- 4.1 AMD RAID Array configurations
  - 4.1.1 RAID definitions
Appendix

ASUS Prime TRX40-PRO S User Manual

Displayed below is the user manual for Prime TRX40-PRO S by ASUS which is a product in the Motherboards category. This manual has pages.

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Motherboard

PRIME

TRX40-

PRO S

E16304

First Edition

January 2020

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, modified or altered, unless

such repair, modification 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

INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,

AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO

RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN

THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Products and corporate names appearing in this manual may or may not be registered trademarks or

copyrights of their respective companies, and are used only for identification or explanation and to the

owners’ benefit, 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/

(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location

where you want to have it shipped to, by sending a request to:

ASUSTeK Computer Inc.

Legal Compliance Dept.

15 Li Te Rd.,

Beitou, Taipei 112

Taiwan

In your request please provide the name, model number and version, as stated in the About Box of the

product for which you wish to obtain the corresponding source code and your contact details so that we

can coordinate the terms and cost of shipment with you.

The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as

the corresponding binary/object code.

This offer is valid to anyone in receipt of this information.

ASUSTeK is eager to duly provide complete source code as required under various Free Open Source

Software licenses. If however you encounter any problems in obtaining the full corresponding source

code we would be much obliged if you give us a notification to the email address gpl@asus.com, stating

the product and describing the problem (please DO NOT send large attachments such as source code

archives, etc. to this email address).

iii

Contents

Safety information ...................................................................................................... vi

About this guide ........................................................................................................ vii

PRIME TRX40-PRO S specifications summary ....................................................... ix

Package contents ..................................................................................................... xiv

Installation tools and components .......................................................................... xv

Chapter 1: Product Introduction

1.1 Before you proceed ...................................................................................1-1

1.2 Motherboard layout ....................................................................................1-2

1.3 Central Processing Unit (CPU) .................................................................1-4

1.4 System memory .........................................................................................1-5

1.5 Expansion slots ..........................................................................................1-7

1.6 Onboard buttons ........................................................................................ 1-9

1.7 Onboard jumpers .....................................................................................1-10

1.8 Onboard LEDs .......................................................................................... 1-11

1.9 Internal connectors ..................................................................................1-13

Chapter 2: Basic Installation

2.1 Building your PC system ...........................................................................2-1

2.1.1 CPU installation...........................................................................2-1

2.1.2 Cooling system installation.......................................................... 2-4

2.1.3 Motherboard installation .............................................................. 2-5

2.1.4 DIMM installation......................................................................... 2-6

2.1.5 ATX power connection ................................................................ 2-7

2.1.6 SATA device connection ............................................................. 2-8

2.1.7 Front I/O connector ..................................................................... 2-9

2.1.8 Expansion card installation ....................................................... 2-10

2.1.9 M.2 installation .......................................................................... 2-11

2.1.10 Fan bracket installation ............................................................. 2-14

2.1.11 M.2 Wi-Fi module and antenna installation ............................... 2-15

2.2 BIOS update utility ................................................................................... 2-16

2.3 Motherboard rear and audio connections .............................................2-17

2.3.1 Rear I/O connection .................................................................. 2-17

2.3.2 Audio I/O connections ............................................................... 2-19

2.4 Starting up for the first time ....................................................................2-21

2.5 Turning off the computer ........................................................................2-21

Chapter 3: BIOS Setup

3.1 Knowing BIOS ............................................................................................3-1

3.2 BIOS setup program ..................................................................................3-2

3.2.1 Advanced Mode .......................................................................... 3-3

3.2.2 EZ Mode......................................................................................3-6

3.2.3 Q-Fan Control ............................................................................. 3-7

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 AMD fTPM configuration ........................................................... 3-12

3.6.2 CPU Configuration .................................................................... 3-12

3.6.3 PCI Subsystem Settings ........................................................... 3-13

3.6.4 USB Configuration .................................................................... 3-14

3.6.5 HDD/SSD SMART Information ................................................. 3-14

3.6.6 NVMe Configuration .................................................................. 3-14

3.6.7 SATA Configuration .................................................................. 3-14

3.6.8 Onboard Devices Configuration ................................................ 3-15

3.6.9 APM Configuration .................................................................... 3-17

3.6.10 Network Stack Configuration..................................................... 3-17

3.6.11 AMD CBS .................................................................................. 3-17

3.6.12 AMD PBS .................................................................................. 3-17

3.6.13 AMD Overclocking .................................................................... 3-17

3.7 Monitor menu ...........................................................................................3-18

3.8 Boot menu ................................................................................................3-18

3.9 Tool menu ................................................................................................. 3-20

3.9.1 ASUS EZ Flash 3 Utility ............................................................ 3-20

3.9.2 Secure Erase ............................................................................ 3-21

3.9.3 ASUS User Profile..................................................................... 3-22

3.9.4 ASUS SPD Information ............................................................. 3-22

3.9.5 ASUS Armoury Crate ................................................................ 3-22

3.10 Exit menu .................................................................................................. 3-23

3.11 Updating BIOS ..........................................................................................3-24

3.11.1 EZ Update ................................................................................. 3-24

3.11.2 ASUS EZ Flash 3 ...................................................................... 3-25

3.11.3 ASUS CrashFree BIOS 3 .......................................................... 3-26

Chapter 4: RAID Support

4.1 AMD RAID Array configurations ...............................................................4-1

4.1.1 RAID definitions .......................................................................... 4-1

Appendix

Q-Code table ............................................................................................................ A-1

Notices .................................................................................................................... A-5

ASUS contact information .................................................................................... A-10

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 fix it by yourself. Contact a qualified 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 qualified service

technician or your retailer.

vii

About this guide

This user guide contains the information you need when installing and configuring the

motherboard.

How this guide is organized

This guide contains the following parts:

• 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.

• Chapter 2: Basic Installation

This chapter lists the hardware setup procedures that you have to perform when

installing system components.

• 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.

• Chapter 4: RAID Support

This chapter describes the RAID configurations.

Where to find 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 flyers,

that may have been added by your dealer. These documents are not part of the

standard package.

viii

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 (+).

PRIME TRX40-PRO S specifications summary

(continued on the next page)

CPU

AMD Socket sTRX4 for 3rd Gen AMD Ryzen™ Threadripper™ Series

Desktop Processors*

* The support of these features depends on the CPU types.

* Refer to www.asus.com for CPU support list.

Chipset AMD TRX40

Memory

3rd Gen AMD Ryzen™ Threadripper™ Series Desktop

Processors

8 x DIMM, max. 256GB, DDR4 4400+(O.C) / 4266(O.C) / 4133(O.C) /

4000(O.C) / 3866(O.C) / 3800(O.C) / 3733(O.C) / 3600(O.C) /

3466(O.C) / 3400(O.C) / 3200 / 3000 / 2933 / 2800 / 2666 / 2400 /

2133 MHz ECC and non-ECC, Unbuffered memory**

Quad Channel Memory Architecture

* Please refer to Memory QVL (Qualified Vendors Lists) on www.asus.com

for details.

Expansion Slots

3rd Gen AMD Ryzen™ Threadripper™ Desktop Processors

- 3 x PCIe 4.0 x16 Safeslots (supports x16/x16/x16 mode)

AMD TRX40 chipset

- 1 x PCIe 4.0 x4

Multi-GPU Support Supports NVIDIA® 2-Way SLI® Technology

Supports AMD 2-Way CrossFireX™ Technology

Storage

3rd Gen AMD Ryzen™ Threadripper™ Desktop Processors

- 2 x M.2 Socket 3(M.2_1 and M.2_2) with M key, type

2242/2260/2280/22110 storage devices support (PCIe 4.0 x4

mode)

AMD TRX40 chipset

- 1 x M.2_3 Socket 3 with vertical M key, type 2242/2260/2280/22110

storage devices support (both SATA & PCIe 4.0 x4 modes)

- 8 x SATA 6Gb/s ports

Supports NVMe RAID configurations via onboard M.2 storages.

LAN

Intel® I211AT Gigabit LAN

ASUS LAN Guard

ASUS Turbo LAN Utility

Wireless & Bluetooth 1 x M.2 Socket (Key E), supports type 2230 PCIe Wi-Fi/BT module*

* The Wi-Fi/BT module is purchased separately.

(continued on the next page)

PRIME TRX40-PRO S specifications summary

Audio

Realtek S1220 8-channel high definition audio CODEC featuring

Crystal Sound 3

- Power pre-regulator reduces power input noise to ensure consistent

performance

- Separate layer for left and right track, ensuring both sound deliver

equal quality

- Impedance sense for front and rear headphone outputs

- Audio shielding ensures precise analog/digital separation and greatly

reduced multi-lateral interference

- Internal audio Amplifier to enhance the highest quality sound for

headphone and speakers

- Premium Japan-made audio capacitors provides warm, natural, and

immersive sound with exceptional clarity and fidelity

- High quality 120dB SNR stereo playback output (Line-out@back) &

108dB SNR input (Line-in) support

- DTS:X® Ultra

- Supports jack-detection, multi-streaming, front panel jack-retasking

(MIC)

- Optical S/PDIF out port at back I/O

USB

3rd Gen AMD Ryzen™ Threadripper™ Desktop Processors

- 2 x USB 3.2 Gen 2 ports (1 x Type-C™, 1 x Type A at back panel)

- 2 x USB 3.2 Gen 1 ports at back panel

AMD TRX40 chipset

- 1 x USB 3.2 Gen 2 front panel Type-C™ connector

- 2 x USB 3.2 Gen 2 ports at back panel, 1 support BIOS FlashBack™

- 4 x USB 3.2 Gen 1 ports at mid-board

- 2 x USB 2.0 ports at mid-board

ASMedia® 1074 USB controller

- 4 x USB 3.2 Gen 1 ports at back panel

GL852G USB 2.0 hub

- 2 x USB 2.0 ports at mid-board

(continued on the next page)

PRIME TRX40-PRO S specifications summary

ASUS Exclusive

Features

5-Way Optimization

- Whole system optimization with a single click! Perfectly

consolidates better CPU performance, power saving, digital

power control, system cooling and app usages.

DIGI+ Power Control

TPU

EPU

Fan Xpert 4

Turbo App

UEFI BIOS

CrashFree BIOS 3

EZ Flash 3

BIOS FlashBack™

Armoury Crate

- AURA SYNC

- ASUS NODE: hardware control interface

- Turbo LAN

Pre-mounted I/O Shield

FlexKey

Q-Design

- ASUS Q-Code

- ASUS Q-Connector

- ASUS Q-DIMM

- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)

- ASUS Q-Slot

xii

PRIME TRX40-PRO S specifications summary

(continued on the next page)

ASUS Special Features

Special Features:

ASUS SafeSlot - Protect your graphics card Investment

ASUS 5X Protection III

- ASUS SafeSlot Core - Fortified PCIe with solid soldering

- ASUS LANGuard - Protects against LAN surges, lightning

strikes and static-electricity discharges!

- ASUS Overvoltage Protection - World-class circuit-

protecting power design

- ASUS DIGI+ VRM -digital power design

- ASUS DRAM Overcurrent Protection: Enhanced DRAM

overcurrent protection

- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for

greater durability!

- AI Suite 3

- Ai Charger

ASUS Quiet Thermal

Solution

Quiet Thermal Design:

- ASUS Fan Xpert 4

- ASUS Stylish MOS & M.2 heatsink, chipset fan with heatsink Design

Back Panel I/O Ports

1 x BIOS FlashBack™ button

1 x Optical S/PDIF out

1 x Intel® LAN (RJ45) port

4 x USB 3.2 Gen 2 ports (3 x Type-A + 1 x Type-C™)

6 x USB 3.2 Gen 1 ports

5 x Audio Jacks

xiii

PRIME TRX40-PRO S specifications summary

Internal I/O Ports

1 x USB 3.2 Gen 2 front panel Type-C™ connector

2 x USB 3.2 Gen 1 connectors support additional 4 USB ports (19-

pin)

2 x USB 2.0 connectors support additional 4 USB ports

2 x M.2_1 Socket 3 with M key, type 2242/2260/2280/22110 storage

devices support (PCIe 4.0 x 4 mode)

1 x M.2_2 Socket 3 with vertical M Key, type 2242/2260/2280/22110

storage devices support (both SATA & PCIe 4.0 x 4 mode)

8 x SATA 6.0Gb/s connectors

1 x 4-Pin W_PUMP+ connector

1 x 4-Pin AIO_PUMP fan connector

1 x 4-Pin CPU Fan connector

1 x 4-Pin CPU_OPT fan connector

1 x 3-pin Chipset fan connector

3 x 4-Pin Chassis Fan connectors

1 x 2-pin Thermal sensor header

1 x 24-pin EATX Power connector

2 x 8-pin EATX 12V Power connectors

2 x Aura Addressable Gen2 headers

2 x Aura RGB headers

1 x NODE connector

1 x Front panel audio connector (AAFP)

1 x System panel connector with FlexKey

1 x Q Code

1 x Clear CMOS header

1 x Power-on button

BIOS 1 x 128 Mb Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS

3.2, ACPI 6.2

Manageability WfM 2.0, WOL by PME, PXE

Software

Drivers

ASUS Utilities

EZ Update

Anti-virus software (OEM version)

Operating System Windows® 10 64-bit

Form Factors 12” x 9.6” (30.5 cm x 24.4 cm)

• Specifications are subject to change without notice.

• Visit the ASUS website for the software manual.

xiv

Package contents

Check your motherboard package for the following items.

Motherboard 1 x PRIME TRX40-PRO S motherboard

Cables

1 x Addressable LED extension cable

1 x RGB LED extension cable

4 x SATA 6.0Gb/s cables

Accessories

1 x M.2 Screw package

1 x M.2 E-key Screw package

1 x M.2 22110 vertical bracket

1 x FAN holder

1 x Q-connector

Application DVD 1 x Motherboard support DVD

Documentation 1 x User guide

If any of the above items is damaged or missing, contact your retailer.

Installation tools and components

1 Bag of screws Screwdriver

PC chassis Power supply unit

AMD Socket sTRX4 CPU AMD Socket sTRX4 compatible CPU Fan

DDR4 DIMM SATA hard disk drive

SATA optical disc drive (optional) Graphics card (optional)

The tools and components in the table above are not included in the motherboard

package.

xvi

PRIME TRX40-PRO S 1-1

Chapter 1

Product Introduction

Chapter 1: Product Introduction

1.1 Before you proceed

Take note of the following precautions before you install motherboard components or

change any motherboard settings.

Components shown in this section may require additional purchase. Refer to Package

contents section for more information about the contents of your motherboard package.

• Unplug the power cord from the wall socket before touching any component.

• Before handling components, use a grounded wrist strap or touch a safely grounded

object or a metal object, such as the power supply case, to avoid damaging them due

to static electricity.

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded antistatic pad or in

the bag that came with the component.

• Before you install or remove any component, ensure that the ATX power supply is

switched off or the power cord is detached from the power supply. Failure to do so

may cause severe damage to the motherboard, peripherals, or components.

1-2 Chapter 1: Product Introduction

Chapter 1

1.2 Motherboard layout

Refer to Internal connectors and Rear I/O connection for more information about rear

panel connectors and internal connectors.

PRIME TRX40-PRO S 1-3

Chapter 1

Layout contents Page

1. Power connectors 1-23

2. DIMM slots 1-5

3. CPU socket 1-4

4. Fan and Pump connectors 1-17

5. Addressable Gen2 LED connector 1-19

6. AURA RGB LED connector 1-20

7. M.2 slot 1-14

8. USB 3.2 Gen 2 connector 1-15

9. USB 3.2 Gen 1 connector 1-15

10. SATA 6Gb/s connector 1-13

11. Chipset Fan connector 1-16

12. Clear RTC RAM jumper 1-10

13. System Panel connector 1-22

14. USB 2.0 connector 1-16

15. Node connector 1-18

16. Thermal Sensor connector 1-18

17. Power button 1-9

18. Q-Code LED 1-11

19. Front Panel Audio connector 1-21

20. M.2 Wi-Fi slot 1-14

21. LED connector 1-21

1-4 Chapter 1: Product Introduction

Chapter 1

1.3 Central Processing Unit (CPU)

The motherboard comes with an AMD Socket sTRX4 for 3rd Gen AMD Ryzen™

Threadripper™ Series Desktop Processors.

• The Socket sTRX4 has a different pinout design. Ensure that you use a CPU

designed for the Socket sTRX4.

• The CPU fits in only one correct orientation. DO NOT force the CPU into the socket

to prevent bending the connectors on the CPU and damaging the CPU.

• Ensure that all power cables are unplugged before installing the CPU.

• Overclocking AMD processors, including without limitation, altering clock frequencies

/ multipliers or memory timing / voltage, to operate beyond their stock specifications

will void any applicable AMD product warranty, even when such overclocking is

enabled via AMD hardware and/or software. This may also void warranties offered

by the system manufacturer or retailer. Users assume all risks and liabilities that may

arise out of overclocking AMD processors, including, without limitation, failure of or

damage to hardware, reduced system performance and/or data loss, corruption or

vulnerability

PRIME TRX40-PRO S 1-5

Chapter 1

1.4 System memory

The motherboard comes with Dual Inline Memory Modules (DIMM) slots designed for DDR4

(Double Data Rate 4) memory modules.

A DDR4 memory module is notched differently from a DDR, DDR2, or DDR3 module. DO

NOT install a DDR, DDR2, or DDR3 memory module to the DDR4 slot.

Recommended memory configurations

1-6 Chapter 1: Product Introduction

Chapter 1

Memory configurations

You may install 4 GB, 8 GB, 16 GB, and 32 GB unbuffered ECC and non-ECC DDR4

DIMMs into the DIMM sockets.

You may install varying memory sizes in Channel A, Channel B, Channel C, and Channel

D. The system maps the total size of the lower-sized channel for the quad-channel

configuration. Any excess memory from the higher-sized channel is then mapped for

single-channel operation.

• The default memory operation frequency is dependent on its Serial Presence Detect

(SPD), which is the standard way of accessing information from a memory module.

Under the default state, some memory modules for overclocking may operate at a

lower frequency than the vendor-marked value.

• For system stability, use a more efficient memory cooling system to support a full

memory load or overclocking condition.

• Always install the DIMMS with the same CAS Latency. For an optimum compatibility,

we recommend that you install memory modules of the same version or data code

(D/C) from the same vendor. Check with the vendor to get the correct memory

modules.

• Visit the ASUS website for the latest QVL.

PRIME TRX40-PRO S 1-7

Chapter 1

1.5 Expansion slots

Unplug the power cord before adding or removing expansion cards. Failure to do so may

cause you physical injury and damage motherboard components.

1-8 Chapter 1: Product Introduction

Chapter 1

• We recommend that you provide sufficient power when running CrossFireX™ or SLI®

mode.

• Ensure to connect both 8-pin power plugs when running CrossFireX™ or SLI® mode.

• Connect a chassis fan to the chassis fan connectors when using multiple graphics

cards for better thermal environment.

Recommended VGA configuration

3rd Gen AMD Ryzen™ Threadripper™ Desktop Processors

Slot Description Single VGA SLI®/CFX

1. PCIe 4.0 x16_1 x16 x16 x16

2. PCIe 4.0 x16_2 - - x16

3. PCIe 4.0 x16_3 - x16 -

PRIME TRX40-PRO S 1-9

Chapter 1

1.6 Onboard buttons

1. Power button

Press the Power button to power up the system, or put the system into sleep or soft-

off mode (depending on the operating system settings).

The button also lights up when the system is plugged to a power source, indicating

that you should shut down the system and unplug the power cable before removing or

installing any motherboard component.

1-10 Chapter 1: Product Introduction

Chapter 1

1.7 Onboard jumpers

1. Clear RTC RAM jumper

The Clear RTC RAM jumper allows you to clear the Real Time Clock (RTC) RAM

in the CMOS, which contains the date, time, system passwords, and system setup

parameters.

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.

3. Plug the power cord and turn ON the computer.

4. Hold down the <Del> key during the boot process and enter BIOS setup to

re-enter data.

DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or

placing a jumper cap will cause system boot failure!

If the steps above do not help, remove the onboard button cell battery and move the

jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the

button cell battery.

PRIME TRX40-PRO S 1-11

Chapter 1

1.8 Onboard LEDs

1. Q LEDs

The Q LEDs check key components (CPU, DRAM, VGA, and booting devices) during

the motherboard booting process. If an error is found, the critical component’s LED

stays lit up until the problem is solved.

The Q LEDs provide the most probable cause of an error code as a starting point for

troubleshooting. The actual cause may vary from case to case.

2. Q-Code LED

The Q-Code LED design provides you with a 2-digit error code that displays the

system status.

• The Q-Code LEDs provide the most probable cause of an error code as a starting

point for troubleshooting. The actual cause may vary from case to case.

• Please refer to the Q-Code table in the Appendix section for more details.

1-12 Chapter 1: Product Introduction

Chapter 1

3. 8-pin Power Plug LED

The 8-pin Power Plug LED lights up to indicate that the 8-pin power plug is not

connected.

• Ensure to connect both 8-pin power plugs.

• Due to the CPU minimum power consumption requirement, we recommend using a

PSU with 850W or above.

PRIME TRX40-PRO S 1-13

Chapter 1

1.9 Internal connectors

1. SATA 6Gb/s connector

The SATA 6Gb/s connector allows you to connect SATA devices such as optical disc

drives and hard disk drives via a SATA cable.

If you installed SATA storage devices, you can create a RAID 0, 1, and 10 configuration

through the onboard AMD TRX40 chipset.

• These connectors are set to [AHCI] by default. If you intend to create a SATA

RAID set using these connectors, set the SATA Mode Selection item in the BIOS to

[RAID].

• Before creating a RAID set, refer to the RAID Configuration Guide. You can

download the RAID Configuration Guide from the ASUS website.

1-14 Chapter 1: Product Introduction

Chapter 1

2. M.2 slot

The M.2 slot allows you to install M.2 devices such as M.2 SSD modules.

• M.2_1 and M.2_2 sockets support PCIe 4.0 x4 M Key design and type 2242 / 2260 /

2280 / 22110 storage devices.

• M.2_3 socket supports PCIe 4.0 x4 and SATA modes vertical M Key design and type

2242 / 2260 / 2280 / 22110 storage devices.

• The M.2 SSD module is purchased separately.

• Use the bundled bracket to install a vertical M.2 SSD module to the M.2_3 socket,

refer to the M.2 Installation section for more details.

3. M.2 Wi-Fi slot

The M.2 Wi-Fi slot allows you to install an M.2 Wi-Fi module (E-key, type 2230).

The M.2 Wi-Fi module is purchased separately.

PRIME TRX40-PRO S 1-15

Chapter 1

5. USB 3.2 Gen 1 connector

The USB 3.2 Gen 1 connector allows you to connect a USB 3.2 Gen 1 module for

additional USB 3.2 Gen 1 ports. The USB 3.2 Gen 1 connector provides data transfer

speeds of up to 5 Gb/s.

The USB 3.2 Gen 1 module is purchased separately.

The plugged USB 3.2 Gen 1 device may run on xHCI or EHCI mode depending on the

operating system’s setting.

4. USB 3.2 Gen 2 connector

The USB 3.2 Gen 2 connector allows you to connect a USB 3.2 Gen 2 module for

additional USB 3.2 Gen 2 ports. The USB 3.2 Gen 2 connector provides data transfer

speeds of up to 10 Gb/s.

The USB 3.2 Gen 2 module is purchased separately.

1-16 Chapter 1: Product Introduction

Chapter 1

6. USB 2.0 connector

The USB 2.0 connector allows you to connect a USB module for additional USB

2.0 ports. The USB 2.0 connector provides data transfer speeds of up to 480 MB/s

connection speed.

DO NOT connect a 1394 cable to the USB connectors. Doing so will damage the

motherboard!

The USB 2.0 module is purchased separately.

7. Chipset Fan connector

The Chipset Fan connector is for connecting the chipset fan on the integrated

heatsink.

PRIME TRX40-PRO S 1-17

Chapter 1

8. Fan and Pump connectors

The Fan and Pump connectors allow you to connect fans or pumps to cool the

system.

• DO NOT forget to connect the fan cables to the fan connectors. Insufficient air

flow inside the system may damage the motherboard components. These are not

jumpers! Do not place jumper caps on the fan connectors!

• Ensure the cable is fully inserted into the connector.

For water cooling kits, connect the pump connector to the W_PUMP+ connector, then

connect the fan connectors to the CPU_FAN and CPU_OPT connectors.

Header Max. Current Max. Power Default Speed Shared Control

CPU_FAN 1A 12W Q-Fan Controlled A

CPU_OPT 1A 12W Q-Fan Controlled A

CHA_FAN1 1A 12W Q-Fan Controlled -

CHA_FAN2 1A 12W Q-Fan Controlled -

CHA_FAN3 1A 12W Q-Fan Controlled -

CHIPSET_FAN 1A 12W Q-Fan Controlled -

AIO_PUMP 1A 12W Full-Speed -

W_PUMP+ 3A 36W Full-Speed -

1-18 Chapter 1: Product Introduction

Chapter 1

9. Node connector

The Node connector allows you to connect a compatible PSU or control a compatible

fan extension card.

Visit www.asus.com for more information about the devices and the latest compatibility list.

10. Thermal Sensor connector

The Thermal Sensor connector allows you to connect a sensor to monitor the

temperature of the devices and the critical components inside the motherboard.

Connect the thermal sensor and place it on the device or the motherboard’s

component to detect its temperature.

The thermal sensor is purchased separately.

PRIME TRX40-PRO S 1-19

Chapter 1

11. Addressable Gen2 LED connector

The Addressable Gen2 LED connector allows you to connect individually addressable

RGB WS2812B LED strips or WS2812B based LED strips.

The Addressable Gen2 LED connector supports WS2812B addressable RGB LED strips

(5V/Data/Ground), with a maximum power rating of 3A (5V) and a maximum of 120 LEDs.

Before you install or remove any component, ensure that the power supply is switched off

or the power cord is detached from the power supply. Failure to do so may cause severe

damage to the motherboard, peripherals, or components.

• Actual lighting and color will vary with LED strip.

• If your LED strip does not light up, check if the addressable RGB LED strip is

connected in the correct orientation, and the 5V connector is aligned with the 5V

header on the motherboard.

• The addressable RGB LED strip will only light up when the system is powered on.

• The addressable RGB LED strip is purchased separately.

1-20 Chapter 1: Product Introduction

Chapter 1

12. AURA RGB LED connector

The AURA RGB LED connector allows you to connect RGB LED strips.

The AURA RGB LED connector supports 5050 RGB multi-color LED strips (12V/G/R/B),

with a maximum power rating of 3A (12V).

Before you install or remove any component, ensure that the power supply is switched off

or the power cord is detached from the power supply. Failure to do so may cause severe

damage to the motherboard, peripherals, or components.

• Actual lighting and color will vary with LED strip.

• If your LED strip does not light up, check if the RGB LED extension cable and the

RGB LED strip is connected in the correct orientation, and the 12V connector is

aligned with the 12V header on the motherboard.

• The LED strip will only light up when the system is powered on.

• The LED strip is purchased separately.

PRIME TRX40-PRO S 1-21

Chapter 1

13. LED connector

The LED connector is for connecting the LED PCB on your I/O cover.

14. Front Panel Audio connector

The front panel audio connector is for a chassis-mounted front panel audio I/O module

that supports HD Audio. Connect one end of the front panel audio I/O module cable to

this connector.

We recommend that you connect a high-definition front panel audio module to this

connector to avail of the motherboard’s high-definition audio capability.

1-22 Chapter 1: Product Introduction

Chapter 1

15. System Panel connector

The System Panel connector supports several chassis-mounted functions.

• System Power LED connector (PLED)

The 2-pin connector allows you to connect the System Power LED. The System

Power LED lights up when the system is connected to a power source, or when you

turn on the system power, and blinks when the system is in sleep mode.

• Storage Device Activity LED connector (HDLED)

The 2-pin connector allows you to connect the Storage Device Activity LED. The

Storage Device Activity LED lights up or blinks when data is read from or written to the

storage device or storage device add-on card.

• System Warning Speaker connector (SPEAKER)

The 4-pin connector allows you to connect the chassis-mounted system warning

speaker. The speaker allows you to hear system beeps and warnings.

• Power Button/Soft-off Button connector (PWRBTN)

The 3-1 pin connector allows you to connect the system power button. Press the

power button to power up the system, or put the system into sleep or soft-off mode

(depending on the operating system settings).

• FlexKey button connector (RESET)

The 2-pin connector allows you to connect the chassis-mounted FlexKey button

(RESET). Press the FlexKey button to reboot the system.

The button will be set to [Reset] by default. You can assign a different function to this

button in the BIOS settings.

PRIME TRX40-PRO S 1-23

Chapter 1

16. Power connectors

These Power connectors allow you to connect your motherboard to a power supply.

The power supply plugs are designed to fit in only one orientation, find the proper

orientation and push down firmly until the power supply plugs are fully inserted.

• Ensure to connect both 8-pin power plugs.

• Due to the CPU minimum power consumption requirement, we recommend using a

PSU with 850W or above.

1-24 Chapter 1: Product Introduction

Chapter 1

PRIME TRX40-PRO S 2-1

Chapter 2

Basic Installation

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.

Chapter 2: Basic Installation

2.1.1 CPU installation

The AMD Socket sTRX4 is compatible with 3rd Gen AMD Ryzen™ Threadripper™

Desktop Processors. Ensure you use a CPU designed for the Socket sTRX4. The CPU fits

in only one correct orientation. DO NOT force the CPU into the socket to prevent bending

the connectors on the socket and damaging the CPU!

External cap

Load plate

Rail frame

Load plate

Use the bundled Torx screwdriver

to remove the load plate screws in

sequence 3>2>1, then lift the load plate.

Use your fingers to pull up the tabs on

both sides of the rail frame to release

the rail frame, then lift the rail frame to

its fully open position.

Unplug all power cables before installing the CPU.

2-2 Chapter 2: Basic Installation

Chapter 2

Remove the external cap.

Rail frame

External cap

PnP cap

Carrier frame

with CPU

Slide the carrier frame with CPU into

the rail frame until you hear a click

sound, then remove the PnP cap.

Carrier frame

with CPU

Gently press down the rail frame

until it latches to the socket housing,

then press down the load plate.

PRIME TRX40-PRO S 2-3

Chapter 2

Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the

heatsink and fan if necessary.

The load plate screws are Torx T20 models. A torque value of 12 inch-lbf is recommended.

Drive the three screws slightly into the holes

in sequence 1>2>3, just enough to attach

the load plate to the socket. When the

three screws are attached, tighten them in

sequence 1>2>3 to completely secure the

load plate. Then apply the Thermal Interface

Material to the CPU.

2-4 Chapter 2: Basic Installation

Chapter 2

2.1.2 Cooling system installation

To install the CPU heatsink and fan assembly:

PRIME TRX40-PRO S 2-5

Chapter 2

2. Place eight (8) screws into the holes indicated by circles to secure the motherboard to

the chassis.

1. Place the motherboard into the chassis, ensuring that its rear I/O ports are aligned to

the chassis’ rear I/O panel.

2.1.3 Motherboard installation

• DO NOT over tighten the screws! Doing so can damage the motherboard.

• Ensure that the space above the installed motherboard at least 8cm to prevent the

MOS heatsink from interfering with the radiator or chassis fans.

• We recommend using an E-ATX chassis when installing this motherboard.

2-6 Chapter 2: Basic Installation

Chapter 2

2.1.4 DIMM installation

To remove a DIMM

PRIME TRX40-PRO S 2-7

Chapter 2

2.1.5 ATX power connection

AND

Ensure to connect the two 8-pin power plugs.

2-8 Chapter 2: Basic Installation

Chapter 2

2.1.6 SATA device connection

PRIME TRX40-PRO S 2-9

Chapter 2

2.1.7 Front I/O connector

To install USB 3.2 Gen 2 connectorTo install ASUS Q-Connector

This connector will only fit in one

orientation. Push the connector until it

clicks into place.

USB 2.0

AAFP

To install USB 2.0 connector

To install front panel audio connector

USB 3.2 Gen 1

To install USB 3.2 Gen 1 connector

To install system speaker connector

USB 3.2 Gen 2

2-10 Chapter 2: Basic Installation

Chapter 2

2.1.8 Expansion card installation

To install PCIe x16 cards

To install PCIe x4 cards

PRIME TRX40-PRO S 2-11

Chapter 2

2.1.9 M.2 installation

Supported M.2 type varies per motherboard.

For M.2_1 and M.2_2 (Type 2242 / 2260 / 2280 M.2)

2-12 Chapter 2: Basic Installation

Chapter 2

For M.2_1 and M.2_2 (Type 22110 M.2)

PRIME TRX40-PRO S 2-13

Chapter 2

For M.2_3 (Type 2242 / 2260 / 2280 / 22110 M.2)

2-14 Chapter 2: Basic Installation

Chapter 2

2.1.10 Fan bracket installation

To install the MOS FAN bracket and fan

When using high performance settings whilst overclocking, ensure to install the MOS FAN

bracket for additional fan(s).

• You may install 12V (1A, 12W), 40mm x 40mm fans.

• The fan is purchased separately.

PRIME TRX40-PRO S 2-15

Chapter 2

2.1.11 M.2 Wi-Fi module and antenna installation

Installing the M.2 W-Fi Module

• Ensure that the

ASUS 2x2 dual

band Wi-Fi antenna

is securely installed

to the Wi-Fi ports.

• Ensure that the

antenna is at least

20 cm away from all

persons.

• The illustration

to the left is for

reference only. The

I/O port layout may

vary with models,

but the Wi-Fi

antenna installation

procedure is the

same for all models.

• The M.2 Wi-Fi

module is purchased

separately.

2-16 Chapter 2: Basic Installation

Chapter 2

2.2 BIOS update utility

BIOS FlashBack™

BIOS FlashBack™ allows you to easily update the BIOS without entering the existing BIOS

or operating system. Simply insert a USB storage device to the USB port (the USB port

hole marked in green on the I/O shield) then press the BIOS FlashBack™ button for three

seconds to automatically update the BIOS.

To use BIOS FlashBack™:

1. Insert a USB storage device to the BIOS FlashBack™ port.

We recommend you to use a USB 2.0 storage device to save the latest BIOS version for

better compatibility and stability.

2. Visit https://www.asus.com/support/ and download the latest BIOS version for this

motherboard.

3. Manually rename the file as PTRX40PS.CAP, or launch the BIOSRenamer.exe

application to automatically rename the file, then copy it to your USB storage device.

The BIOSRenamer.exe application is zipped together with your BIOS file when you

download a BIOS file for a BIOS FlashBack™ compatible motherboard.

4. Shut down your computer.

5. Press the BIOS FlashBack™ button for three seconds until the BIOS FlashBack™

LED blinks three times, indicating that the BIOS FlashBack™ function is enabled.

BIOS FlashBack™ button BIOS FlashBack™ port

6. Wait until the light goes out, indicating that the BIOS updating process is completed.

For more BIOS update utilities in BIOS setup, refer to the section Updating BIOS in

Chapter 3.

• Do not unplug portable disk, power system, or short the CLR_CMOS jumper while

BIOS update is ongoing, otherwise update will be interrupted. In case of interruption,

please follow the steps again.

• If the light flashes for five seconds and turns into a solid light, this means that the

BIOS FlashBack™ is not operating properly. This may be caused by improper

installation of the USB storage device and filename/file format error. If this scenario

happens, please restart the system to turn off the light.

• Updating BIOS may have risks. If the BIOS program is damaged during the process

and results to the system’s failure to boot up, please contact your local ASUS Service

Center.

PRIME TRX40-PRO S 2-17

Chapter 2

2.3 Motherboard rear and audio connections

2.3.1 Rear I/O connection

* and ** : Refer to the tables on the next page for LAN port LEDs, and audio port definitions.

Rear panel connectors

1. USB 3.2 Gen 1 ports E1234

2. BIOS FlashBack™ button

3. USB 3.2 Gen 1 ports 56

4. USB 3.2 Gen 2 port 1

5. LAN (RJ-45) port*

6. USB 3.2 Gen 2 Type-C™ port C2

7. USB 3.2 Gen 2 ports 34. Lower port supports BIOS FlashBack™ function.

8. Optical S/PDIF OUT port

9. Audio I/O ports**

2-18 Chapter 2: Basic Installation

Chapter 2

** Audio 2, 4, 5.1 or 7.1-channel configuration

Port Headset

2-channel

4-channel 5.1-channel 7.1-channel

Light Blue Line In Line In Line In Side Speaker Out

Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Red Mic In Mic In Mic In Mic In

Orange – – Center/Sub

woofer

Center/Sub

woofer

White – Rear Speaker Out Rear Speaker Out Rear Speaker Out

* LAN ports LED indications

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

ACT/LINK

LED SPEED

LED

LAN port

PRIME TRX40-PRO S 2-19

Chapter 2

2.3.2 Audio I/O connections

Audio I/O ports

Connect to Headphone and Mic

Connect to Stereo Speakers

Connect to 2-channel Speakers

2-20 Chapter 2: Basic Installation

Chapter 2

Connect to 4 channel Speakers

Connect to 6 channel Speakers

Connect to 8 Speakers

PRIME TRX40-PRO S 2-21

Chapter 2

2.4 Starting up for the first 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 storage 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.

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.

2.5 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 button

for more than four seconds to let the system enter the soft-off mode regardless of the BIOS

setting.

2-22 Chapter 2: Basic Installation

Chapter 2

PRIME TRX40-PRO S 3-1

Chapter 3

BIOS Setup

3.1 Knowing BIOS

The new ASUS UEFI BIOS is a Unified 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 flexible 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 specified.

BIOS (Basic Input and Output System) stores system hardware settings such as storage

device configuration, overclocking settings, advanced power management, and boot

device configuration 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 file, rename it as PTRX40PS.CAP for this

motherboard.

Chapter 3: BIOS Setup

3-2 Chapter 3: BIOS Setup

Chapter 3

• 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 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 Onboard jumpers in your

user manual for the location of the Clear CMOS jumper to clear RTC RAM.

• 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.

You can change modes from Setup Mode in Boot menu or by pressing the <F7> hotkey.

3.2 BIOS setup program

Use the BIOS Setup to update the BIOS or configure 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 first two options.

After doing either of the three options, press <Delete> key to enter BIOS.

PRIME TRX40-PRO S 3-3

Chapter 3

3.2.1 Advanced Mode

The Advanced Mode provides advanced options for experienced end-users to configure

the BIOS settings. The figure below shows an example of the Advanced Mode. Refer to the

following sections for the detailed configurations.

The default screen for entering the BIOS setup program can be changed. Refer to the

Setup Mode item in section Boot menu for details.

Menu items General help

Menu bar Language Qfan Control(F6)

MyFavorite(F3) AURA ON/OFF(F4)

Search(F9)

Scroll bar

Pop-up Menu

Configuration fields

Last modified settings

Go back to EZ Mode

Displays a quick overview of the

system status and prediction

Search on the FAQ

Hot Keys

3-4 Chapter 3: BIOS Setup

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 configuration.

Main For changing the basic system configuration

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 configuration

Tool For configuring 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 specific items for that menu. For example,

selecting Main shows the Main menu items.

The other items (My Favorites, Extreme 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 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 Q-Fan Control for more information.

Search (F9)

This button allows you to search for BIOS items by entering its name, enter the item name to

find the related item listing.

PRIME TRX40-PRO S 3-5

Chapter 3

AURA (F4)

This button allows you to turn the RGB LED lighting or functional LED on or off.

[All On]: All LEDs (Aura or Functional) will be enabled.

[Aura Only]: Aura LEDs will be enabled and functional LEDs will be disabled.

[Aura Off]: Aura LEDs will be disabled, however functional LEDs will still be enabled.

[Stealth Mode]: All LEDs (Aura and Functional) will be disabled.

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 fit

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.

Configuration fields

These fields show the values for the menu items. If an item is user-configurable, you can

change the value of the field opposite the item. You cannot select an item that is not

user-configurable.

A configurable field is highlighted when selected. To change the value of a field, select it and

press <Enter> to display a list of options.

Last Modified button

This button shows the items that you last modified and saved in BIOS Setup.

3-6 Chapter 3: BIOS Setup

Chapter 3

3.2.2 EZ Mode

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, select Advanced Mode or press the <F7> hotkey for the advanced

BIOS settings.

To switch from Advanced Mode to EZ Mode, click EZ Mode(F7) or press the <F7> hotkey.

The boot device options vary depending on the devices you installed to the system.

Selects the display language

of the BIOS setup program

Displays a quick overview

of the system status

Displays the system properties of the

selected mode. Click < or > to switch 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

Search(F9)

AURA ON/OFF(F4)

PRIME TRX40-PRO S 3-7

Chapter 3

3.2.3 Q-Fan Control

The Q-Fan Control allows you to set a fan profile or manually configure the operating speed

of your CPU and chassis fans.

Click to select a fan to be

configured 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 profile to

apply to your fans

Click to activate DC Mode

Select to manually configure

your fans

3-8 Chapter 3: BIOS Setup

Chapter 3

Configuring fans manually

Select Manual from the list of profiles to manually configure your fans’ operating speed.

To configure your fans:

1. Select the fan that you want to configure 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

configure your fans

PRIME TRX40-PRO S 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 MyFavorite(F3) 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

• Configuration 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

PRIME TRX40-PRO S 3-11

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 Onboard jumpers for the location of

the Clear CMOS jumper to clear RTC RAM.

• 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 configure overclocking-related items.

Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field

values can cause the system to malfunction

The configuration options for this section vary depending on the CPU and DIMM model

you installed on the motherboard.

Ai Overclock Tuner

Allows you to select the CPU overclocking options to achieve the desired CPU internal

frequency.

[Auto] Loads the optimal settings for the system.

[Default] Loads the default settings of the system.

[Manual] Allows you to individually set overclocking parameters.

[D.O.C.P. Standard] Allows you to select a DRAM O.C. profile, and the related

parameters will be adjusted automatically.

The following item appears only when you set the Ai Overclocking Tuner to [Manual].

BCLK Frequency

This item allows you to set the BCLK frequency to enhance the system performance.

Use the <+> or <-> to adjust the value.

We recommend you to set the value based on the CPU specification, as high BCLK

frequencies may damage the CPU permanently.

3-12 Chapter 3: BIOS Setup

Chapter 3

CPU Core Ratio

This item allows you to set the CPU core ratios.

Configuration options: [Auto] [Sync All Cores] [Per Core] [By Specific Core]

TPU

This item allows you to automatically overclock the CPU and DRAM frequencies and voltage

for an enhanced system performance.

[Keep Current Settings] Keep the current settings without changing anything.

[TPU I] Applies air cooling overclocking conditions.

[TPU II] Applies water cooling overclocking conditions.

Ensure to use water cooling device before selecting [TPU II].

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 field

values can cause the system to malfunction.

3.6.1 AMD fTPM configuration

The items in this menu show the AMD fTPM configuration options.

AMD CPU fTPM

This item allows you to enable or disable AMD CPU fTPM.

Configuration options: [Enable] [Disable]

When AMD CPU fTPM is set to disabled all saved data on it will be lost.

3.6.2 CPU Configuration

The items in this menu show the CPU-related information that the BIOS automatically

detects.

The items in this menu may vary based on the CPU installed.

PSS Support

This item allows you enable or disable the generation of ACPI_PPC, _PSS, and _PCT

objects.

Configuration options: [Disabled] [Enabled] [Auto]

PRIME TRX40-PRO S 3-13

Chapter 3

NX Mode

This item allows you enable or disable no-execute page protection function.

Configuration options: [Disabled] [Enabled]

SVM Mode

This item allows you enable or disable CPU Virtualization.

Configuration options: [Disabled] [Enabled]

SMT Mode

This item allows you enable or disable Simultaneous multithreading.

Configuration options: [Auto] [Disabled]

S3 is not supported on systems where cores/threads have been removed/disabled.

3.6.3 PCI Subsystem Settings

Allows you to configure PCI, PCI-X, and PCI Express Settings.

Above 4G Decoding

Allows you to enable or disable 64-bit capable devices to be decoded in above 4G address

space. It only works if the system supports 64-bit PCI decoding.

Configuration options: [On] [Off]

SR-IOV Support

This option enables or disables Single Root IO Virtualization Support if the system has

SRIOV capable PCIe devices.

Configuration options: [On] [Off]

BME DMA Mitigation

Allows you to re-enable Bus Master Attribute disabled during Pci enumeration for PCI

Bridges after SMM Locked.

Configuration options: [On] [Off]

Changing PCI Device(s) settings may have unwanted side effects! System may HANG!

Proceed with caution.

3-14 Chapter 3: BIOS Setup

Chapter 3

3.6.4 USB Configuration

The items in this menu allow you to change the USB-related features.

The Mass Storage Devices item shows the auto-detected values. If no USB device is

detected, the item shows None.

Legacy USB Support

[Enabled] Your system supports the USB devices in legacy operating systems.

[Disabled] Your USB devices can be used for BIOS setup only and cannot be

recognized in the boot devices list.

[Auto] Your system automatically detects the presence of USB devices at startup.

If any USB devices are detected, the legacy USB support is enabled.

XHCI Hand-off

[Enabled] Enables the support for operating systems without an XHCI hand-off

feature.

[Disabled] Disables the XHCI Hand-off support.

USB Single Port Control

This item allows you to enable or disable the individual USB ports.

Refer to section Motherboard layout for the location of the USB ports.

3.6.5 HDD/SSD SMART Information

This menu displays the SMART information of the connected devices.

3.6.6 NVMe Configuration

You may view the NVMe controller and Drive information if an NVMe device is connected.

NVM Express devices do not support SMART information.

3.6.7 SATA Configuration

While entering Setup, the BIOS automatically detects the presence of SATA devices. The

SATA Port items show Not Present if no SATA device is installed to the corresponding

SATA port.

SATA Port Enable

This item allows you to enable or disable the SATA Device.

Configuration options: [Disabled] [Enabled]

PRIME TRX40-PRO S 3-15

Chapter 3

The following items appear only when SATA Port Enable is set to [Enabled].

SATA Mode

This item allows you to set the SATA configuration.

[AHCI] Set to [AHCI] when you want the SATA hard disk drives to use the

AHCI (Advanced Host Controller Interface). The AHCI allows the

onboard storage driver to enable advanced SATA features that

increases storage performance on random workloads by allowing

the drive to internally optimize the order of commands.

[RAID] Set to [RAID] when you want to create a RAID configuration from

the SATA hard disk drives.

NVMe RAID Mode

This item allows you to enable or disable the NVMe RAID mode.

Configuration options: [Disabled] [Enabled]

SMART Self Test

S.M.A.R.T. (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.

Configuration options: [On] [Off]

SATA6G_1(Gray) - SATA6G_8(Gray)

This item allows you to enable or disable the selected SATA port.

Configuration options: [Disabled] [Enabled]

Hot Plug

These items appears only when the SATA Mode is set to [AHCI] and allows you to

enable or disable SATA Hot Plug Support.

Configuration options: [Disabled] [Enabled]

M.2_3(Gray)

This item allows you to rename the AMD APU M.2 ports.

3.6.8 Onboard Devices Configuration

The items in this menu allow you to switch between PCIe Lanes and configure onboard

devices.

3-16 Chapter 3: BIOS Setup

Chapter 3

PCIEX16_1 Bandwidth

[X16 Mode] The PCIe x16_1 slot runs at x16 mode.

[PCIe RAID Mode] The four PCIe x16 slots run at x4+x4+x4+x4 mode, which allows

you to create a RAID array for up to 4 PCIe devices.

Use PCIe RAID Mode when installing the Hyper M.2 x16 card or other M.2 adapter cards.

Installing other devices when using PCIe RAID Mode may cause your PC to fail to boot

up.

PCIEX16_2 Bandwidth

[X8 Mode] The PCIe x16_2 slot runs at x8 mode.

[PCIe RAID Mode] The PCIe x16 slots run at x4+x4 mode, which allows you to

create a RAID array for up to 2 PCIe devices.

Use PCIe RAID Mode when installing the Hyper M.2 x16 card or other M.2 adapter cards.

Installing other devices when using PCIe RAID Mode may cause your PC to fail to boot

up.

PCIEX16_3 Bandwidth

[X16 Mode] The PCIe x16_3 slot runs at x16 mode.

[PCIe RAID Mode] The four PCIe x16 slots run at x4+x4+x4+x4 mode, which allows

you to create a RAID array for up to 4 PCIe devices.

Use PCIe RAID Mode when installing the Hyper M.2 x16 card or other M.2 adapter cards.

Installing other devices when using PCIe RAID Mode may cause your PC to fail to boot

up.

HD Audio Controller

This item allows you to use the Azalia High Definition Audio Controller.

Configuration options: [Disabled] [Enabled]

ASM1074 Controller (Back)

[Disabled] Disables the controller.

[Enabled] Enables the rear USB 3.2 controller.

RGB LED lighting

When system is in working state

This item allows you to turn the RGB LED lighting on or off when the system is in the

working state.

Configuration options: [On] [Off]

Q-Code LED Function

[Disabled] Disable the Q-Code LED function.

[POST Code Only] Show POST (Power-On Self-Test) code on Q-Code LED.

[Auto] Automatically display POST (Power-On Self-Test) code and

CPU temperature on Q-Code LED.

PRIME TRX40-PRO S 3-17

Chapter 3

3.6.10 Network Stack Configuration

The items in this menu allow you to enable or disable the UEFI network stack

When system is in sleep, hibernate or soft off states

This item allows you to turn the RGB LED lighting on or off when the system is in the

sleep, hibernate or soft off states.

Configuration options: [On] [Off]

3.6.9 APM Configuration

The items in this menu allow you to set system wake and sleep settings.

Restore On AC Power Loss

This item allows your system to go to ON state, OFF state, or both states after an AC power

loss. When setting your system to [Last State], it goes to the previous state before the AC

power loss.

Configuration options: [Power On] [Power Off] [Last State]

ErP Ready

This item allows you to switch off some power at S4+S5 or S5 to get the system ready for

ErP requirement. When set to [Enabled], all other PME options are switched off.

Configuration options: [Disabled] [Enable(S4+S5)] [Enable(S5)]

Power On By PCI-E

This item allows you to enable or disable the Wake-on-LAN function of the onboard LAN

controller or other installed PCI-E LAN cards.

Configuration options: [Disabled] [Enabled]

Power On By RTC

This item allows you to enable or disable the RTC (Real-Time Clock) to generate a wake

event and configure the RTC alarm date. When enabled, you can set the days, hours,

minutes, or seconds to schedule an RTC alarm date.

Configuration options: [Disabled] [Enabled]

3.6.11 AMD CBS

The items in this menu shows the AMD Common BIOS Specifications.

3.6.12 AMD PBS

The items in this menu shows the AMD PBS Setup Page.

3.6.13 AMD Overclocking

The items in this menu shows the AMD Overclocking Setup Page.

3-18 Chapter 3: BIOS Setup

Chapter 3

3.7 Monitor menu

The Monitor menu displays the system temperature/power status, and allows you to change

the fan settings.

Scroll down to display the other BIOS items.

Q-fan Configuration

Qfan Tuning

Click this item to automatically detect the lowest speed and configure the minimum

duty cycle for each fan.

WATER PUMP+ Control

[Disabled] Disable the Water Pump control feature.

[Auto] Detects the type of water pump installed and automatically switches

the control modes.

[DC mode] Enable the Water Pump control in DC mode for 3-pin chassis fan.

[PWM mode] Enable the Water Pump control in PWM mode for 4-pin chassis fan.

AIO PUMP Control

[Disabled] Disable the AIO Pump control feature.

[Auto] Detects the type of AIO pump installed and automatically switches

the control modes.

[DC mode] Enable the AIO Pump control in DC mode for 3-pin chassis fan.

[PWM mode] Enable the AIO Pump control in PWM mode for 4-pin chassis fan.

3.8 Boot menu

The Boot menu items allow you to change the system boot options.

Boot Configuration

Fast Boot

[Disabled] Allows your system to go back to its normal boot speed.

[Enabled] Allows your system to accelerate the boot speed.

The following item appears only when you set the Fast Boot to [Enabled].

Next Boot after AC Power Loss

[Normal Boot] Returns to normal boot on the next boot after an AC power loss.

[Fast Boot] Accelerates the boot speed on the next boot after an AC power loss.

Boot Logo Display

[Auto] Sets the boot logo to display during POST.

[Full Screen] Sets the boot logo display in full screen during POST.

[Disabled] Disables the boot logo display during POST.

PRIME TRX40-PRO S 3-19

Chapter 3

Setup 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)

This item allows you to configure the CSM (Compatibility Support Module) items to fully

support the various VGA, bootable devices and add-on devices for better compatibility.

Launch CSM

[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 non-UEFI driver add-on devices

or the Windows® UEFI mode.

The following items appear only when Launch CSM is set to [Enabled].

Boot Device Control

This item allows you to select the type of devices that you want to boot.

Configuration options: [UEFI and Legacy OPROM] [Legacy OPROM only]

[UEFI only]

Boot from Network Devices

This item allows you to select the type of network devices that you want to

launch.

Configuration options: [Ignore] [Legacy only] [UEFI driver first]

Boot from Storage Devices

This item allows you to select the type of storage devices that you want to

launch.

Configuration options: [Ignore] [Legacy only] [UEFI driver first]

Boot from PCI-E/PCI Expansion Devices

This item allows you to select the type of PCI-E/PCI expansion devices

that you want to launch.

Configuration options: [Legacy only] [UEFI driver first]

Secure Boot

This item allows you to configure the Windows® Secure Boot settings and manage its keys to

protect the system from unauthorized access and malwares during POST.

3-20 Chapter 3: BIOS Setup

Chapter 3

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 access Windows® OS in Safe Mode, press <F8> after POST (Windows® 8 not

supported).

• To select the boot device during system startup, press <F8> when the 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.

AMI Native NVMe Driver Support

This item allows you to enable or disable all NVMe device native OpROM.

Configuration options: [On] [Off]

3.9 Tool menu

The Tool menu items allow you to configure options for special functions. Select an item

then press <Enter> to display the submenu.

Setup Animator

This item allows you to enable or disable the Setup animator.

Configuration options: [Disabled] [Enabled]

3.9.1 ASUS EZ Flash 3 Utility

This item allows you to run ASUS EZ Flash 3. When you press <Enter>, a confirmation

message appears. Use the left/right arrow key to select between [Yes] or [No], then press

<Enter> to confirm your choice.

For more details, refer to section ASUS EZ Flash 3.

PRIME TRX40-PRO S 3-21

Chapter 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.

Secure Erase is only available in AHCI mode. Ensure to set the SATA mode to AHCI.

Click Advanced > SATA Configuration > SATA Mode > AHCI.

To launch Secure Erase, click Tool > Secure Erase on the Advanced mode menu.

Secure Erase is only supported on selected SATA SSDs, and cannot erase NVMe storage

devices.

• 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 AMD® SATA port. For more information about

AMD SATA ports, refer to section Motherboard layout of this manual.

Status definition:

• 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 defined by ASUS. You have to unlock the SSD in the software before

proceeding with Secure Erase.

Displays the

available SSDs

3-22 Chapter 3: BIOS Setup

Chapter 3

3.9.3 ASUS User Profile

This item allows you to store or load multiple BIOS settings.

Load from Profile

This item allows you to load the previous BIOS settings saved in the BIOS Flash. Key in the

profile number that saved your BIOS settings, press <Enter>, and then select Yes.

• DO NOT shut down or reset the system while updating the BIOS to prevent the

system boot failure!

• We recommend that you update the BIOS file only coming from the same memory/

CPU configuration and BIOS version.

Profile Name

This item allows you to key in a profile name.

Save to Profile

This item allows you to save the current BIOS settings to the BIOS Flash, and create a

profile. Key in a profile number from one to eight, press <Enter>, and then select Yes.

Load/Save Profile from/to USB Drive

This item allows you to load or save profile from your USB drive, load and save profile to

your USB drive.

3.9.4 ASUS SPD Information

This item allows you to view the DRAM SPD information.

3.9.5 ASUS Armoury Crate

This item allows you to enable or disable the ASUS Armoury Crate. The ASUS Armoury

Crate is a fixed Advanced Configuration and Power Interface (ACPI) table that provides

Windows with a platform binary that the operating system can execute.

PRIME TRX40-PRO S 3-23

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.

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 confirmation window appears.

Select OK to load the default values.

Save Changes & Reset

Once you are finished 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 confirmation window appears. Select OK to save changes and exit.

Discard Changes & 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 confirmation 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.efi) from one of

the available filesystem devices.

3-24 Chapter 3: BIOS Setup

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 file 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 flash drive.

3. ASUS CrashFree BIOS 3: Restores the BIOS using the motherboard support USB

drive when the BIOS file 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 USB drive that comes with the motherboard

package.

PRIME TRX40-PRO S 3-25

Chapter 3

3.11.2 ASUS EZ Flash 3

ASUS EZ Flash 3 allows you to download and update to the latest BIOS without having to

use a bootable floppy disk or an OS-based utility.

To update the BIOS by USB:

1. Insert the USB flash disk that contains the latest BIOS file to the USB port.

2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select

ASUS EZ Flash 3 Utility and press <Enter>.

3. Press <Tab> to switch to the Drive field.

5. Press the Up/Down arrow keys to find the USB flash disk that contains the latest

BIOS, and then press <Enter>.

6. Press <Tab> to switch to the Folder Info field.

7. Press the Up/Down arrow keys to find the BIOS file, and then press <Enter> to

perform the BIOS update process. Reboot the system when the update process is

done.

• This function can support devices such as a USB flash 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.

3-26 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 file when it fails or gets corrupted during the updating process. You can restore a

corrupted BIOS file using the motherboard support USB drive that contains the BIOS file.

The BIOS file in the motherboard support USB drive may be older than the BIOS file

published on the ASUS official website. If you want to use the newer BIOS file, download

the file at https://www.asus.com/support/ and save it to a USB flash drive.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the motherboard support DVD, support USB drive, or a USB flash drive

containing the BIOS file to the USB port.

3. The utility automatically checks the devices for the BIOS file. When found, the utility

reads the BIOS file 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!

PRIME TRX40-PRO S 4-1

Chapter 4

RAID Support

Chapter 4: RAID Support

4.1 AMD RAID Array configurations

The motherboard comes with the RaidXpert2 Configuration Utility that supports Volume,

RAIDABLE, RAID 0, RAID 1, and RAID 10 (depends on system licensing) configurations.

For more information on configuring your RAID sets, please refer to the RAID

Configuration Guide which you can find at https://www.asus.com/support.

4.1.1 RAID definitions

Volume provides the ability to link-together storage from one or several disks, regardless

of the size of the space on those disks. This configuration is useful in scavenging space on

disks unused by other disks in the array. This configuration does not provide performance

benefits or data redundancy, disk failure will result in data loss.

RAIDABLE arrays (also known as RAID Ready) are a special type of Volume (JBOD) that

allows the user to add more storage space or create a redundant array after a system is

installed. RAIDABLE arrays are created using Option ROM, UEFI, or rcadm.

The ability to create RAIDABLE arrays may vary per system.

RAID 0 (Data striping) optimizes two identical hard disk drives to read and write data in

parallel, interleaved stacks. Two hard disks perform the same work as a single drive but at a

sustained data transfer rate, double that of a single disk alone, thus improving data access

and storage. Use of two new identical hard disk drives is required for this setup.

RAID 1 (Data mirroring) copies and maintains an identical image of data from one drive to

a second drive. If one drive fails, the disk array management software directs all applications

to the surviving drive as it contains a complete copy of the data in the other drive. This RAID

configuration provides data protection and increases fault tolerance to the entire system.

Use two new drives or use an existing drive and a new drive for this setup. The new drive

must be of the same size or larger than the existing drive.

RAID 10 is data striping and data mirroring combined without parity (redundancy data)

having to be calculated and written. With the RAID 10 configuration you get all the benefits

of both RAID 0 and RAID 1 configurations. Use four new hard disk drives or use an existing

drive and three new drives for this setup.

4-2 Chapter 4: RAID Support

Chapter 4

PRIME TRX40-PRO S A-1

Appendix

Q-Code table

(continued on the next page)

Code Description

00 Not used

01 Power on. Reset type detection (soft/hard).

02 AP initialization before microcode loading

03 System Agent initialization before microcode loading

04 PCH initialization before microcode loading

06 Microcode loading

07 AP initialization after microcode loading

08 System Agent initialization after microcode loading

09 PCH initialization after microcode loading

0B Cache initialization

0C – 0D Reserved for future AMI SEC error codes

0E Microcode not found

0F Microcode not loaded

10 PEI Core is started

11 – 14 Pre-memory CPU initialization is started

15 – 18 Pre-memory System Agent initialization is started

19 – 1C Pre-memory PCH initialization is started

2B – 2F Memory initialization

30 Reserved for ASL (see ASL Status Codes section below)

31 Memory Installed

32 – 36 CPU post-memory initialization

37 – 3A Post-Memory System Agent initialization is started

3B – 3E Post-Memory PCH initialization is started

4F DXE IPL is started

50 – 53 Memory initialization error. Invalid memory type or incompatible memory

speed

54 Unspecified memory initialization error

55 Memory not installed

56 Invalid CPU type or Speed

57 CPU mismatch

58 CPU self test failed or possible CPU cache error

59 CPU micro-code is not found or micro-code update is failed

5A Internal CPU error

5B Reset PPI is not available

5C – 5F Reserved for future AMI error codes

A-2 Appendix

Appendix

Q-Code table

Code Description

E0 S3 Resume is stared (S3 Resume PPI is called by the DXE IPL)

E1 S3 Boot Script execution

E2 Video repost

E3 OS S3 wake vector call

E4 – E7 Reserved for future AMI progress codes

E8 S3 Resume Failed

E9 S3 Resume PPI not Found

EA S3 Resume Boot Script Error

EB S3 OS Wake Error

EC – EF Reserved for future AMI error codes

F0 Recovery condition triggered by firmware (Auto recovery)

F1 Recovery condition triggered by user (Forced recovery)

F2 Recovery process started

F3 Recovery firmware image is found

F4 Recovery firmware image is loaded

F5 – F7 Reserved for future AMI progress codes

F8 Recovery PPI is not available

F9 Recovery capsule is not found

FA Invalid recovery capsule

FB – FF Reserved for future AMI error codes

60 DXE Core is started

61 NVRAM initialization

62 Installation of the PCH Runtime Services

63 – 67 CPU DXE initialization is started

68 PCI host bridge initialization

69 System Agent DXE initialization is started

6A System Agent DXE SMM initialization is started

6B – 6F System Agent DXE initialization (System Agent module specific)

70 PCH DXE initialization is started

71 PCH DXE SMM initialization is started

72 PCH devices initialization

73 – 77 PCH DXE Initialization (PCH module specific)

78 ACPI module initialization

79 CSM initialization

7A – 7F Reserved for future AMI DXE codes

(continued on the next page)

PRIME TRX40-PRO S A-3

Appendix

Q-Code table

Code Description

90 Boot Device Selection (BDS) phase is started

91 Driver connecting is started

92 PCI Bus initialization is started

93 PCI Bus Hot Plug Controller Initialization

94 PCI Bus Enumeration

95 PCI Bus Request Resources

96 PCI Bus Assign Resources

97 Console Output devices connect

98 Console input devices connect

99 Super IO Initialization

9A USB initialization is started

9B USB Reset

9C USB Detect

9D USB Enable

9E – 9F Reserved for future AMI codes

A0 IDE initialization is started

A1 IDE Reset

A2 IDE Detect

A3 IDE Enable

A4 SCSI initialization is started

A5 SCSI Reset

A6 SCSI Detect

A7 SCSI Enable

A8 Setup Verifying Password

A9 Start of Setup

AA Reserved for ASL (see ASL Status Codes section below)

AB Setup Input Wait

AC Reserved for ASL (see ASL Status Codes section below)

AD Ready To Boot event

AE Legacy Boot event

AF Exit Boot Services event

B0 Runtime Set Virtual Address MAP Begin

B1 Runtime Set Virtual Address MAP End

B2 Legacy Option ROM Initialization

B3 System Reset

(continued on the next page)

A-4 Appendix

Appendix

Code Description

B4 USB hot plug

B5 PCI bus hot plug

B6 Clean-up of NVRAM

B7 Configuration Reset (reset of NVRAM settings)

B8– BF Reserved for future AMI codes

D0 CPU initialization error

D1 System Agent initialization error

D2 PCH initialization error

D3 Some of the Architectural Protocols are not available

D4 PCI resource allocation error. Out of Resources

D5 No Space for Legacy Option ROM

D6 No Console Output Devices are found

D7 No Console Input Devices are found

D8 Invalid password

D9 Error loading Boot Option (LoadImage returned error)

DA Boot Option is failed (StartImage returned error)

DB Flash update is failed

DC Reset protocol is not available

Q-Code table

ACPI/ASL Checkpoints (under OS)

Code Description

0x01 System is entering S1 sleep state

0x02 System is entering S2 sleep state

0x03 System is entering S3 sleep state

0x04 System is entering S4 sleep state

0x05 System is entering S5 sleep state

0x10 System is waking up from the S1 sleep state

0x20 System is waking up from the S2 sleep state

0x30 System is waking up from the S3 sleep state

0x40 System is waking up from the S4 sleep state

0xAC System has transitioned into ACPI mode. Interrupt controller is in PIC mode.

0xAA System has transitioned into ACPI mode. Interrupt controller is in APIC mode.

PRIME TRX40-PRO S A-5

Appendix

Notices

FCC Compliance Information

Responsible Party: Asus Computer International

Address: 48720 Kato Rd., Fremont, CA 94538, USA

Phone / Fax No: (510)739-3777 / (510)608-4555

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.

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 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 the dealer or an experienced radio/TV technician for help.

A-6 Appendix

VCCI: Japan Compliance Statement

Class B ITE

KC: Korea Warning Statement

Compliance Statement of Innovation, Science and Economic

Development Canada (ISED)

This device complies with Innovation, Science and Economic Development Canada licence

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.

CAN ICES-3(B)/NMB-3(B)

Déclaration de conformité de Innovation, Sciences et

Développement économique Canada (ISED)

Le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement

économique Canada applicables aux appareils radio exempts de licence. L’exploitation est

autorisée aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage,

et (2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le

brouillage est susceptible d’en compromettre le fonctionnement.

CAN ICES-3(B)/NMB-3(B)

Appendix

PRIME TRX40-PRO S A-7

Google™ License Terms

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file

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.

See the License for the specific language governing permissions and limitations under the

License.

Declaration of compliance for product environmental

regulation

ASUS follows the green design concept to design and manufacture our products, and

makes sure that each stage of the product life cycle of ASUS product is in line with global

environmental regulations. In addition, ASUS disclose the relevant information based on

regulation requirements.

Please refer to http://csr.asus.com/Compliance.htm for information disclosure based on

regulation requirements ASUS is complied with:

EU REACH and Article 33

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.

EU RoHS

This product complies with the EU RoHS Directive. For more details, see

http://csr.asus.com/english/article.aspx?id=35

India RoHS

This product complies with the “India E-Waste (Management) Rules, 2016” and prohibits

use of lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs) and

polybrominated diphenyl ethers (PBDEs) in concentrations exceeding 0.1% by weight in

homogenous materials and 0.01% by weight in homogenous materials for cadmium, except

for the exemptions listed in Schedule II of the Rule.

Vietnam RoHS

ASUS products sold in Vietnam, on or after September 23, 2011,meet the requirements of

the Vietnam Circular 30/2011/TT-BCT.

Các sản phẩm ASUS bán tại Việt Nam, vào ngày 23 tháng 9 năm2011 trở về sau, đều phải đáp ứng

các yêu cầu của Thông tư 30/2011/TT-BCT của Việt Nam.

Turkey RoHS

AEEE Yönetmeliğine Uygundur

Appendix

A-8 Appendix

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.

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.

Regional notice for California

WARNING

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

Appendix

PRIME TRX40-PRO S A-9

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 finns 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 findes

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 finnes 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

Appendix

A-10 Appendix

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 https://www.asus.com/support/Product/ContactUs/

Services/questionform/?lang=en

ASUS COMPUTER INTERNATIONAL (America)

Address 48720 Kato Rd., Fremont, CA 94538, 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 https://www.asus.com/support/Product/ContactUs/

Services/questionform/?lang=en-us

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 https://www.asus.com/support/Product/ContactUs/

Services/questionform/?lang=de-de

Table of Contents

ASUS Prime TRX40-PRO S User Manual

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