ASUS TUF-B450M-Plus Service Manual

TUF GAMING

B450M-PLUS II

Motherboard

E17210
First Edition

August 2020

Copyright © 2020 ASUSTeK COMPUTER INC. All Rights Reserved.

No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).

Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication 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 identication or explanation and to the
owners’ benet, without intent to infringe.

ii

Contents

Safety information ...................................................................................................... iv

About this guide .......................................................................................................... v

Package contents ....................................................................................................... vi

TUF GAMING B450M-PLUS II specifications summary .......................................... vi

Chapter 1 Product Introduction

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

1.2 Motherboard overview ................................................................................. 1-1

1.3 Central Processing Unit (CPU) .................................................................... 1-8

1.4 System memory ............................................................................................ 1-9

Chapter 2 BIOS and RAID Support

2.1 Knowing BIOS ...............................................................................................2-1

2.2 BIOS Setup program .................................................................................... 2-2

2.3 ASUS EZ Flash 3 ...........................................................................................2-3

2.4 ASUS CrashFree BIOS 3 .............................................................................. 2-4

2.5 RAID configurations ..................................................................................... 2-5

Appendix

Notices ..................................................................................................................... A-1

ASUS contact information ...................................................................................... A-6

iii

Safety information

Electrical safety

• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.

• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.

• Before connecting or removing signal cables from the motherboard, ensure that all power
cables are unplugged.

• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.

• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.

• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.

Operation safety

• Before installing the motherboard and adding components, 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 be exposed to moisture.

• Place the product on a stable surface.

• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.

• Your motherboard should only be used in environments with ambient temperatures
between 0°C and 40°C.

iv

About this guide

This user guide contains the information you need when installing and conguring 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 descriptions of the switches, jumpers, and connectors on the
motherboard.

• Chapter 2: BIOS and RAID Support

This chapter tells how to boot into the BIOS, upgrade BIOS using the EZ Flash Utility
and support on RAID.

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 provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.

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.

Conventions used in this guide

To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.

CAUTION: Information to prevent damage to the components and injuries to
yourself 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.

v

Package contents

Check your motherboard package for the following items.

Motherboard

Cables

Miscellaneous

Application DVD

Documentation

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

1 x TUF GAMING B450M-PLUS II motherboard

2 x SATA 6Gb/s cables

1 x I/O Shield
1 x M.2 SSD screw package
1 x TUF Gaming sticker

1 x Support DVD

1 x TUF Certication card

1 x User manual

TUF GAMING B450M-PLUS II specifications summary

AMD Socket AM4 for 3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD

CPU

Chipset AMD B450 Chipset

Memory

Graphics

Expansion Slots

Multi-GPU Support

Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega

Graphics Processors*

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

4 x DIMM, Max. 128GB, DDR4 4400(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.

C.)/3600(O.C.)/3533(O.C.)/3466(O.C.)/3400(O.C.)/3200(O.C.)/3000(O.C.

)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory*

Dual Channel Memory Architecture

*ECC Memory (ECC mode) support varies by CPU.
*The maximum memory frequency supported varies by processor.
*Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with

Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics
Processors

TM

1 x HDMI

2.0b

1 x DVI-D

*Graphics specifications may vary between CPU types.

3rd/2nd/1st Gen AMD Ryzen™ Processors

1 x PCIe 3.0 x16 slot (supports x16 mode)

2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics
Processors

1 x PCIe 3.0 x16 slot (supports x8 mode)

AMD Athlon™ with Radeon™ Vega Graphics Processors

1 x PCIe 3.0 x16 slot (supports x4 mode)

AMD B450 Chipset

1 x PCIe 2.0 x16 slot (supports x4 mode)

1 x PCIe 2.0 x1 slot

Supports AMD 2-Way CrossFireX™ Technology

(continued on the next page)

vi

TUF GAMING B450M-PLUS II specifications summary

Total supports 1 x M.2 slot and 6 x SATA 6Gb/s ports
3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with

Radeon™ Vega Graphics

1 x M.2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 &

SATA modes)*

AMD Athlon™ with Radeon™ Vega Graphics Processors

Storage

Ethernet

USB

Audio

Back Panel I/O Ports

1 x M.2 slot (Key M), type 2242/2260/2280/22110 (supports SATA mode)

3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with

Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics
Processors

2 x SATA 6Gb/s ports with Raid 0, 1, 10 support

AMD B450 Chipset

4 x SATA 6Gb/s ports with Raid 0, 1, 10 support

* The M.2 slot shares bandwidth with SATA6G_56. When the M.2 slot is populated,

SATA6G_56 ports will be disabled.

1 x Realtek RTL8111H 1Gb Ethernet

TUF LANGuard

Rear USB (Total 6 ports)

1 x USB 3.2 Gen 2 port (1 x Type-A)

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

2 x USB 2.0 ports (2 x Type-A)

Front USB (Total 6 ports)

1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Realtek 7.1 Surround Sound High Definition Audio CODEC*

- Supports: Jack detection, Multi-streaming, Front Panel Jack-retasking

- Supports up to 24-Bit/192kHz playback

Audio Features

- Audio Shielding

- Premium Japanese audio capacitors

- Dedicated audio PCB layers

- Audio cover

* A chassis with an HD audio module in the front panel is required to support 7.1

Surround Sound audio output.

1 x USB 3.2 Gen 2 port (1 x Type-A)

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

2 x USB 2.0 ports (2 x Type-A)

1 x DVI-D

1 x HDMITM port

1 x Realtek RTL8111H 1Gb Ethernet port

3 x Audio jacks

1 x BIOS FlashBack™ button

1 x PS/2 Keyboard/Mouse combo port

(continued on the next page)

vii

TUF GAMING B450M-PLUS II specifications summary

Fan and cooling related

1 x 4-pin CPU Fan header

2 x 4-pin Chassis Fan headers

Power related

1 x 24-pin Main Power connector

1 x 8-pin +12V Power connector

Storage related

1 x M.2 slot (Key M)

6 x SATA 6Gb/s ports

Internal I/O
Connectors

Special Features

USB

1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Miscellaneous

1 x AURA RGB header

1 x Clear CMOS header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x Speaker header

1 x S/PDIF out header

1 x SPI TPM header (14-1 pin)

1 x 10-1 pin System Panel header

ASUS TUF PROTECTION

- ASUS DIGI+ VRM

- ASUS Enhanced DRAM Overcurrent Protection

- ASUS ESD Guards

- TUF LANGuard

- ASUS Overvoltage Protection

- ASUS SafeSlot

- ASUS Stainless-Steel Back I/O

ASUS Q-Design

- ASUS Q-DIMM

- ASUS Q-Slot

ASUS Thermal Solution

- Aluminum heatsink design

ASUS EZ DIY

- BIOS FlashBack™ button

- BIOS FlashBack™ LED

AURA Sync

- AURA RGB header

viii

(continued on the next page)

TUF GAMING B450M-PLUS II specifications summary

ASUS Exclusive Software

Armoury Crate

- Aura Creator

- Aura Sync

- AI Noise-Canceling Microphone

AI Suite 3

- Performance And Power Saving Utility

TurboV EVO
EPU

DIGI+ VRM
Fan Xpert 2+

- EZ update

Software
Features

BIOS 256 Mb Flash ROM, UEFI AMI BIOS
Manageability WOL by PME, PXE

Operating
System

Form Factor

- PC Cleaner

TUF GAMING CPU-Z

AI Charger

ASUS Turbo LAN

DAEMON Tools

DTS Custom for GAMING Headsets

Norton Anti-virus software (Free Trial for 60 days)

WinRAR

UEFI BIOS

ASUS EZ DIY

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3

- ASUS UEFI BIOS EZ Mode

Windows 10 64-bit

Windows 7 64-bit*

* To support Windows 7 64-bit, please install an AMD Ryzen™ 2nd Generation or

Ryzen™ 1st Generation Processor.

mATX Form Factor

9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)

Specications are subject to change without notice. Refer to the ASUS website for the

latest specications.

ix

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