ASUS TUF-B550-Plus Service Manual

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TUF GAMING B550-PLUS

Motherboard

E16576

First Edition

April 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.

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Contents

Safety information......................................................................................................	iv
About this guide...........................................................................................................	v
Package contents.......................................................................................................	vi
TUF GAMING B550-PLUS specifications summary.................................................	vi
Connectors with shared bandwidth...........................................................................	x


Chapter 1		Product introduction
1.1	Before you proceed......................................................................................		1-1
1.2	Motherboard overview..................................................................................		1-1
1.3	Central Processing Unit (CPU)....................................................................		1-9
1.4	System memory..........................................................................................		1-10
1.5	M.2 installation............................................................................................		1-11


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 fix it by yourself. Contact a qualified 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 qualified service technician or your retailer.

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

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 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.

Package contents

Check your motherboard package for the following items.

	Motherboard	1 x TUF GAMING B550-PLUS motherboard
	Cables	2 x SATA 6Gb/s cables

		1 x I/O Shield
		1 x M.2 Rubber package
	Miscellaneous	1 x M.2 SSD screw package
		1 x M.2 Key E screw package
		1 x TUF Gaming sticker

	Application DVD	1 x Support DVD

	Documentation	1 x TUF Certification card
	Documentation	1 x User manual
		1 x User manual

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

TUF GAMING B550-PLUS specifications summary

	CPU	AMD Socket AM4 for 3rd Gen AMD Ryzen™ Processors*
	CPU	*Refer to www.asus.com for CPU support list.
		*Refer to www.asus.com for CPU support list.
	Chipset	AMD B550 Chipset
		3rd Gen AMD Ryzen™ Processors
		4 x DIMM, Max. 128GB, DDR4 4400(O.C)/4000(O.C)/3866(O.C)/3600(O.C)/
	Memory	3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz, Un-buffered Memory*
	Memory	Dual Channel Memory Architecture
		Dual Channel Memory Architecture
		*ECC Memory (ECC mode) support varies by CPU.
		**Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

		1 x DisplayPort 1.2
	Graphics	1 x HDMITM 2.1(4K@60HZ)
		*Graphics specifications may vary between CPU types.

		3rd Gen AMD Ryzen™ Processors
		1 x PCIe 4.0 x16 slot (supports x16 mode)
		AMD B550 Chipset
	Expansion Slots	1 x PCIe 3.0 x16 slot (supports x4 mode)**
		3 x PCIe 3.0 x1 slots**

Multi-GPU Support

Storage

*Support PCIe bifurcation for RAID on CPU function.

**PCIE 3.0 X16_2 runs x1 mode when any of the PCIe 3.0 x1 slots is occupied.

Supports AMD 2-Way CrossFireX™ Technology

Total supports 2 x M.2 slots and 6 x SATA 6Gb/s ports 3rd Gen AMD Ryzen™ Processors

M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)

AMD B550 Chipset

M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 &

SATA modes)*

6 x SATA 6Gb/s ports Support Raid 0, 1, 10

*M2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.

(continued on the next page)

TUF GAMING B550-PLUS specifications summary

Ethernet

Wireless &

Bluetooth

USB

Audio

Back Panel I/O Ports

Internal I/O

Connectors

1 x Realtek RTL8125B 2.5Gb Ethernet

M.2 slot (Key E) (Wi-Fi module is sold separately)

Rear USB (Total 8 ports)

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

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 ALC S1200A 7.1-Channel High Definition Audio CODEC*

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

-Supports up to 24-Bit/192 kHz playback

Audio Features

-Audio Shielding

-Rear optical S/PDIF out port

-Premium Japanese audio capacitors

-Dedicated audio PCB layers

-Audio cover

-Unique de-pop circuit

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

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

1 x DisplayPort

1 x HDMITM port

1 x Realtek RTL8125B 2.5Gb Ethernet port

5 x Audio jacks

1 x Optical S/PDIF out port

1 x BIOS FlashBack™ button

Fan and cooling related

1 x 4-pin CPU Fan header

1 x 4-pin CPU OPT Fan header

1 x 4-pin AIO Pump header

3 x 4-pin Chassis Fan headers

Power related

1 x 24-pin Main Power connector

1 x 8-pin +12V Power connector

Storage related

2 x M.2 slots (Key M)

6 x SATA 6Gb/s ports

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

(continued on the next page)

vii

TUF GAMING B550-PLUS specifications summary

	Miscellaneous
	1 x AURA Addressable Gen 2 header
	2 x AURA RGB headers
	1 x Clear CMOS header
Internal I/O	1 x COM Port header
Connectors	1 x Front Panel Audio header (AAFP)
	1 x M.2 slot (Key E)
	1 x SPI TPM header (14-1pin)
	1 x 20-3 pin System Panel header with Chassis intrude function
	1 x Thunderbolt header

ASUS TUF PROTECTION

-ASUS DIGI+ VRM (Digital power design with Dr. MOS)

-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-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device
Special Features	[yellow green])
-	ASUS Q-Slot

ASUS Thermal Solution

- Aluminum M.2 heatsink

ASUS EZ DIY

- BIOS FlashBack™ button - BIOS FlashBack™ LED - Procool

	AURA Sync
	-	Standard RGB headers
	-	Addressable Gen 2 RGB header
	ASUS Exclusive Software
	Armoury Crate
	-	Aura Creator
	-	Aura Sync
	-	AI Noise Cancelling Microphone
	AI Suite 3
Software	-	Performance And Power Saving Utility
Features		TurboV EVO
		TurboV EVO
		EPU
		Digi+ VRM
		Fan Xpert 4
		PC Cleaner
	-	EZ update
	-	System Information

(continued on the next page)

viii

TUF GAMING B550-PLUS specifications summary

	TUF GAMING CPU-Z
	AI Charger
	ASUS Turbo LAN
	DAEMON Tools
	DTS Custom for GAMING Headsets
Software	Norton Anti-virus software (Free Trial for 60 days)
Features	WinRAR
	WinRAR
	UEFI BIOS
	ASUS EZ DIY
	-	ASUS CrashFree BIOS 3
	-	ASUS EZ Flash 3
	- ASUS UEFI BIOS EZ Mode
BIOS	256 Mb Flash ROM, UEFI AMI BIOS
Manageability	WOL by PME, PXE
Operating	Windows® 10 - 64 bit
System	Windows® 10 - 64 bit
System

Form Factor

mATX Form Factor

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

Specifications are subject to change without notice. Refer to the ASUS website for the latest specifications.

Connectors with shared bandwidth

RGB_HEADER1

	A
	A		B
	A		B
			B
	A
		RGB_HEADER2
Configuration		1	2
	PCIEX16_2	x4	x1
A	PCIEX1_1	-	x1
A	PCIEX1_2	-	x1
	PCIEX1_2	-	x1
	PCIEX1_3	-	x1
Configuration		1	2
B	M.2_2	PCIe 3.0 x4 / SATA	-
B	SATA6G_56	-	v
	SATA6G_56	-	v

• PCIE 3.0 X16_2 runs x1 mode when any of the PCIe 3.0 x1 slots is occupied.

• M2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.

Product introduction

1.1Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.

• 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.

•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.

1.2Motherboard overview

24.4cm(9.6in)

RGB_HEADER1

Place this side towards

the rear of the

chassis

(12in)30.5cm

RGB_HEADER2

Unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.

ASUS TUF GAMING B550-PLUS

1-1

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