Asus TUF GAMING B550-PLUS WIFI II Manuale utente

Marca: Asus

Modello: TUF GAMING B550-PLUS WIFI II

Categoria: Schede madri

Tipo: Manuale utente

Motherboard

TUF GAMING

B550-PLUS WIFI II

E22526

Revised Edition V2

September 2023

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.

iii

Contents

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

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

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

TUF GAMING B550-PLUS WIFI II specications 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 congurations ..................................................................................... 2-5

Appendix

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

Warranty ................................................................................................................... A-9

ASUS contact information .................................................................................... A-11

Service and Support ............................................................................................. A-11

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 become wet.

• 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.

Button/Coin Batteries Safety Information

WARNING

KEEP OUT OF REACH OF CHILDREN

Swallowing can lead to chemical burns,

perforation of soft tissue, and death.

Severe burns can occur within 2 hours

of ingestion. Seek medical attention

immediately.

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 nd 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.

TUF GAMING B550-PLUS WIFI II specications summary

CPU

AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/

4000 G-Series/ 3000 Series Desktop Processors*

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

Chipset AMD B550 Chipset

Memory

4 x DIMM, Max. 128GB, DDR4

4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/

4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/

3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133 MHz, Un-

buffered Memory*

Dual Channel Memory Architecture

* ECC Memory (ECC mode) support varies by CPU.

* Refer to www.asus.com for the Memory QVL (Qualied Vendors Lists), and

memory frequency support depends on the CPU types.

Graphics

1 x DisplayPort 1.2

1 x HDMITM 2.1(4K@60HZ)

*Graphics specications may vary between CPU types.

Expansion Slots

AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors

1 x PCIe 4.0 x16 slot (supports x16 mode)

AMD RyzenTM 5000 G-Series/ 4000 G-Series Processors

1 x PCIe 3.0 x16 slot (supports x16 mode)

AMD B550 Chipset

1 x PCIe 3.0 x16 slot (supports x4 mode)*

3 x PCIe 3.0 x1 slots*

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

**Support PCIe bifurcation for RAID on CPU function.

(continued on the next page)

Package contents

Check your motherboard package for the following items.

Motherboard 1 x TUF GAMING B550-PLUS WIFI II motherboard

Cables 2 x SATA 6Gb/s cables

Miscellaneous

1 x I/O Shield

1 x M.2 Rubber package

1 x M.2 SSD screw package

1 x TUF Gaming sticker

1 x ASUS 2x2 dual-band Wi-Fi moving antennas

Installation Media 1 x Support DVD

Documentation 1 x TUF Certication card

1 x User manual

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

vii

TUF GAMING B550-PLUS WIFI II specications summary

Storage

Total supports 2 x M.2 slots and 6 x SATA 6Gb/s ports

AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors

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

SATA modes)

AMD RyzenTM 5000 G-Series/ 4000 G-Series Processors

M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 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

Supports RAID 0, 1, 10

* M.2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated,

SATA6G_56 will be disabled.

Ethernet 1 x Realtek 2.5Gb Ethernet

Wireless &

Bluetooth

Wi-Fi 6

2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)

Supports 2.4/5GHz frequency band

Bluetooth v5.2"

* Bluetooth v5.2 function will be ready in Windows 11 or later.

USB

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

Audio

Realtek 7.1 Surround Sound High Denition 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

(continued on the next page)

viii

TUF GAMING B550-PLUS WIFI II specications summary

Back Panel I/O

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)

1 x DisplayPort

1 x HDMITM port

1 x ASUS Wi-Fi Module

1 x Realtek 2.5Gb Ethernet port

5 x Audio jacks

1 x Optical S/PDIF out port

1 x BIOS FlashBack™ button

Internal I/O

Connectors

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

Miscellaneous

2 x AURA Addressable Gen 2 headers

2 x AURA RGB headers

1 x Clear CMOS header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x SPI TPM header (14-1pin)

1 x 20-5 pin System Panel header

1 x Thermal Sensor header

1 x Thunderbolt header

Special Features

ASUS TUF PROTECTION

- ASUS DIGI+ VRM (Digital power design with DrMOS)

- ASUS Enhanced DRAM Overcurrent Protection

- ASUS ESD Guards

- TUF LANGuard

- ASUS Overvoltage Protection

- ASUS SafeSlot

- ASUS Stainless-Steel Back I/O

(continued on the next page)

TUF GAMING B550-PLUS WIFI II specications summary

Special Features

ASUS Q-Design

- ASUS Q-DIMM

- ASUS Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device

[yellow green])

- ASUS Q-Slot

ASUS Thermal Solution

- Aluminum M.2 heatsink

ASUS EZ DIY

- BIOS FlashBack™ button

- BIOS FlashBack™ LED

- ProCool

AURA Sync

- AURA RGB headers

- Addressable Gen 2 RGB headers

Software

Features

ASUS Exclusive Software

Armoury Crate

- AURA Sync

- Two-Way AI Noise Cancelation

AI Suite 3

- Performance and Power Saving Utility

TurboV EVO

EPU

DIGI+ VRM

Fan Xpert 4

PC Cleaner

- EZ update

- System Information

AURA Creator

TUF GAMING CPU-Z

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

BIOS 256 Mb Flash ROM, UEFI AMI BIOS

Manageability WOL by PME, PXE

Operating

System Windows® 11 64-bit, Windows® 10 64-bit

Form Factor ATX Form Factor

12 inch x 9.6 inch (30.5 cm x 24.4 cm)

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

latest specications.

Connectors with shared bandwidth

DDR4 DIMM_A1 (64bit, 288-pin module)

DDR4 DIMM_A2* (64bit, 288-pin module)

DDR4 DIMM_B1 (64bit, 288-pin module)

DDR4 DIMM_B2* (64bit, 288-pin module)

DIGI+

VRM

AIO_PUMP

CHA_FAN3 CHA_FAN2

CHA_FAN1

Realtek

2.5Gb

CPU_FAN CPU_OPT

BOOT

VGA

CPU

DRAM

M.2_1(SOCKET3)

RGB_HEADER2

COM_DEBUG

COM

AURA

RGB_HEADER1

ADD_GEN 2_2

ADD_GEN 2_1

PANEL

AAFP CLRTC

T_SENSOR

256Mb

BIOS

SATA6G_12SATA6G_34SATA6G_56

EATX12V

EATXPWR

U32G1_12

BATTERY

HDMI

_DP

PCIEX1_1

2280

TPM

2260 2242

M.2_2(SOCKET3)

2280

22110

2260 2242

PCIEX1_2

PCIEX1_3

PCIEX16_2

PCIEX16_1

USB_E34 USB_E12

TB_HEADER

U2_56U32G1_78

AUDIO

LAN_U32G1_34

SOCKET AM4

FLBK_LED1

BIOS_FLBK

U32G2_C6

U32G2_5

M.2(WIFI)

AMD

B550

Configuration 1 2

PCIEX16_2 x4 x1

PCIEX1_1 -x1

PCIEX1_2 -x1

PCIEX1_3 -x1

Configuration 1 2

BM.2_2 PCIe 3.0 x4 / SATA -

SATA6G_56 -v

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

• M.2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56

will be disabled.

ASUS TUF GAMING B550-PLUS WIFI II 1-1

Product Introduction

1.1 Before 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.

Unplug the power cord before installing or removing the motherboard. Failure to do so can

cause you physical injury and damage motherboard components.

1.2 Motherboard overview

Place this

side towards

the rear of the

chassis

DDR4 DIMM_A1 (64bit, 288-pin module)

DDR4 DIMM_A2* (64bit, 288-pin module)

DDR4 DIMM_B1 (64bit, 288-pin module)

DDR4 DIMM_B2* (64bit, 288-pin module)

DIGI+

VRM

AIO_PUMP

CHA_FAN3 CHA_FAN2

CHA_FAN1

CPU_FAN CPU_OPT

BOOT

VGA

CPU

DRAM

M.2_1(SOCKET3)

RGB_HEADER2

COM_DEBUG

COM

AURA

RGB_HEADER1

ADD_GEN 2_2

ADD_GEN 2_1

PANEL

AAFP CLRTC

T_SENSOR

256Mb

BIOS

SATA6G_12SATA6G_34SATA6G_56

EATX12V

EATXPWR

U32G1_12

BATTERY

HDMI

_DP

PCIEX1_1

2280

TPM

2260 2242

M.2_2(SOCKET3)

2280

22110

2260 2242

PCIEX1_2

PCIEX1_3

PCIEX16_2

PCIEX16_1

USB_E34 USB_E12

TB_HEADER

U2_56U32G1_78

AUDIO

LAN_U32G1_34

SOCKET AM4

FLBK_LED1

BIOS_FLBK

U32G2_C6

U32G2_5

M.2(WIFI)

AMD

B550

24.4cm(9.6in)

30.5cm(12in)

Realtek

2.5Gb 8

18 13 11 10 12 1714

214 15 114

169

Chapter 1: Product Introduction

1-2 Chapter 1: Product introduction

1.2.1 Layout contents

1. CPU socket

The motherboard comes with an AMD Socket AM4 for AMD Ryzen™ 5000 Series/ 5000

G-Series/ 4000 G-Series/ 3000 Series Desktop Processors*.

For more details, refer to Central Processing Unit (CPU).

2. DDR4 DIMM slots

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

(Double Data Rate 4) memory modules.

For more details, refer to System memory.

3. Expansion slots

This motherboard supports two PCIe x16 graphics cards and three PCIe 3.0 x1 network

cards, SCSI cards and other cards that comply with the PCI Express specication. Please

refer to the following table for the Hyper M.2 conguration.

Hyper M.2 x16 series card conguration

Slot PCIe bifurcation settings in PCIe x16 slots with different Ryzen™ CPUs

PCIEX16_1

AMD Ryzen™ 5000 Series/ 3000

Series Desktop Processors (Support

PCIe Gen 4 SSDs)

AMD Ryzen™ 5000 G-Series/ 4000 G-Series

Desktop Processors (Only support PCIe

Gen 3 SSDs)

Supported SSDs Supported SSDs

4 3

• Hyper M.2 X16 series cards are sold separately.

• When using AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors and a

Hyper M.2 X16 series card with 4 M.2 SSDs, if you wish to connect a display, we

suggest installing a VGA card to PCIe X16_2, which will run at x4.

• Set PCIEX16_1 to [PCIe RAID Mode] under BIOS settings to enable the Hyper M.2

X16 series card.

4. Fan headers

The Fan headers allow you to connect fans to cool the system.

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 -

AIO_PUMP 1A 12W Full-Speed -

5. Power connectors

These Power connectors allow you to connect your motherboard

to a power supply. The power supply plugs are designed to t in

only one orientation. Find the proper orientation and push down

rmly until the power supply plugs are fully inserted.

GND

FAN PWR

FAN IN

FAN PWM

FAN IN

FAN PWR

GND

FAN PWM

FAN IN

FAN PWR

GND

EATX12V

+12V DC

GND

EATXPWR

PIN 1

GND

+5 Volts

-5 Volts

GND

PSON#

GND

-12 Volts

+3 Volts

+12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND

+3 Volts

ASUS TUF GAMING B550-PLUS WIFI II 1-3

Ensure to connect the 8-pin power plug.

• For a fully congured system, we recommend that you use a power supply unit

(PSU) that complies with ATX 12V Specication 2.0 (or later version) and provides a

minimum power of 350 W.

• We recommend that you use a PSU with a higher power output when conguring a

system with more power-consuming devices. The system may become unstable or

may not boot up if the power is inadequate.

• If you are uncertain about the minimum power supply requirement for your system, we

recommend you to refer to online resources for Power Supply Wattage Calculator.

6. M.2 Slots (Key M)

The M.2 slots allow you to install M.2 devices such as M.2 SSD modules.

• For AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors, M.2_1 slot supports

PCIe 4.0 x4 mode and SATA mode Key M design and type 2242/2260/2280/22110

storage devices.

• For AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors, M.2_1

slot supports PCIe 3.0 x4 mode and SATA mode Key M design and type

2242/2260/2280/22110 storage devices.

• For AMD B550 chipset, M.2_2 slot supports PCIe 3.0 x4 mode and SATA mode Key

M design and type 2242/2260/2280/22110 storage devices.

7. SATA 6Gb/s ports

The SATA 6Gb/s ports allow you to connect SATA devices such as optical disc drives and

hard disk drives via a SATA cable.

8. USB 3.2 Gen 1 header

The USB 3.2 Gen 1 header 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

header provides data transfer speeds of up to 5 Gb/s.

The USB 3.2 Gen 1 module is purchased separately.

9. USB 2.0 headers

The USB 2.0 headers allow you to connect USB modules for additional USB

2.0 ports. The USB 2.0 headers provide data transfer speeds of up to 480

Mb/s.

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

damage the motherboard!

The USB 2.0 module is purchased separately.

10. AURA Addressable Gen 2 headers

The Addressable Gen 2 headers allow you to connect individually

addressable RGB WS2812B LED strips or WS2812B based LED strips.

USB3+5V

IntA_P1_SSRX-

IntA_P1_SSRX+

GND

IntA_P1_SSTX-

IntA_P1_SSTX+

GND

IntA_P1_D-

IntA_P1_D+

GND

PIN 1

USB3+5V

IntA_P2_SSRX-

IntA_P2_SSRX+

GND

IntA_P2_SSTX-

IntA_P2_SSTX+

GND

IntA_P2_D-

IntA_P2_D+

USB+5V

USB_P9-

USB_P9+

GND

USB+5V

USB_P10-

USB_P10+

GND

PIN 1

+5V

Data

Ground

PIN 1

ADD_GEN 2

1-4 Chapter 1: Product introduction

The Addressable Gen 2 headers support WS2812B addressable RGB LED strips (5V/Data/

Ground), with a maximum power rating of 3A (5V), and the addressable headers on this

board can handle a combined maximum of 500 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.

11. AURA RGB headers

The RGB headers allow you to connect RGB LED strips.

The RGB headers support 5050 RGB multi-color LED strips (12V/G/

R/B), with a maximum power rating of 3A (12V), and no longer than 3 m.

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.

• 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 are 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.

12. Clear CMOS header

This header allows you to clear the CMOS RTC RAM data of the system setup

information such as date, time, and system passwords.

To erase the RTC RAM:

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

2. Use a metal object such as a screwdriver to short the two pins.

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.

If the steps above do not help, remove the onboard battery and short the two pins again to

clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.

CLRTC

+3V_BAT

GND

PIN 1

ASUS TUF GAMING B550-PLUS WIFI II 1-5

13. COM Port header

This header is for a serial (COM) port. Connect the serial port module cable

to this header, then install the module to a slot opening at the back of the

system chassis.

14. Front Panel Audio header

This header is for a chassis-mounted front panel audio I/O module that

supports HD audio standard. Connect one end of the front panel audio

I/O module cable to this header.

• We recommend that you connect a high-denition front panel

audio module to this header to avail of the motherboard’s high-

denition audio capability.

• If you want to connect a high-denition front panel audio

module to this header, set the Front Panel Type item in the

BIOS setup to [HD Audio]. By default, this header is set to [HD

Audio].

15. SPI TPM header

This header supports a Trusted Platform Module (TPM) system with a

Serial Peripheral Interface (SPI), allowing you to securely store keys, digital

certicates, passwords, and data. A TPM system also helps enhance

network security, protects digital identities, and ensures platform integrity.

The SPI_TPM module is purchased separately.

16. 20-5 pin System Panel header

This header supports several chassis-mounted functions.

• System power LED (2-pin PLED)

This 2-pin header is for the system power LED. Connect the

chassis power LED cable to this header. The system power LED

lights up when you turn on the system power, and blinks when the

system is in sleep mode.

• Hard disk drive activity LED (2-pin HDD_LED)

This 2-pin header is for the HDD Activity LED. Connect the HDD

Activity LED cable to this header. The HDD LED lights up or ashes when data is read

from or written to the HDD.

• System warning speaker (4-pin SPEAKER)

This 4-pin header is for the chassis-mounted system warning speaker. The speaker

allows you to hear system beeps and warnings.

• ATX power button/soft-off button (2-pin PWRSW)

PIN 1

COM

DCD

TXD

GND

RTS

RXD

DTR

DSR

CTS

PLED+

PLED-

PWRBTN#

GND

+5V

Ground

Speaker

HDD_LED+

HDD_LED-

Ground

RSTCON#

PLED+

PLED-

PIN 1

PLED

SPEAKER

PANEL

HDD_LED

PWRSW

RESET

* Requires an ATX power supply

AAFP

AGND

SENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT2 L

HD-audio-compliant

pin definition

TPM

PIN 1

T_SPI_MOSI

T_SPI_CLK

GND

F_BIOS_WP#_R

S_SPI_TPM_CS2#

S_SPI_TPM_IRQ#

F_SPI_HOLD#_R

T_SPI_MISO

F_SPI_CS0#_R

+3V_SPI

F2_SPI_CS1#_R

S_PLTRST#

VCCSPI

1-6 Chapter 1: Product introduction

This header is for the system power button. Pressing the power button turns the

system on or puts the system in sleep or soft-off mode depending on the operating

system settings. Pressing the power switch for more than four seconds while the

system is ON turns the system OFF.

• Reset button (2-pin RESET)

This 2-pin header is for the chassis-mounted reset button for system reboot without

turning off the system power.

17. Thermal Sensor header

This header is for the thermistor cable that allows you to monitor the

temperature of your motherboard’s critical components and connected

devices.

18. Thunderbolt header

This header is for the add-on Thunderbolt I/O card that supports Intel’s

Thunderbolt Technology, allowing you to connect up to six Thunderbolt-

enabled devices and a DisplayPort-enabled display in a daisy-chain

conguration.

19. 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.

20. BIOS FlashBackTM LED

The FlashBack™ LED lights up or blinks to indicate the status of the

BIOS FlashBack™.

Scan the QR code for more information on BIOS FlashBackTM

function.

PIN 1

T_SENSOR

SENSOR IN

GND

PIN 1

FORCE_PWR

CIO_PLUG_EVENT

SLP_S3#

SLP_S5#

GND

RTD3_SW

I2C_SCL

I2C_SDA

I2C_IRQ#

RTD3_POWER_EN

S_SLP_S0#_IDLE

PERST_N

WAKE#

TB_HEADER

ASUS TUF GAMING B550-PLUS WIFI II 1-7

1.2.2 Rear panel connectors

1. USB 2.0 port. This 4-pin Universal Serial Bus (USB) port is for USB 2.0 devices.

2. USB 2.0 port with BIOS FlashBackTM function. Insert a USB storage device to this

USB 2.0 port to run BIOS FlashBackTM.

3. USB 3.2 Gen 2 (up to 10Gbps) port (teal blue, Type A). This 9-pin Universal Serial

Bus 3.2 (USB 3.2) port is for USB 3.2 Gen 2 devices.

4. Ethernet port. This port allows 2.5G Gigabit connection to a Local Area Network (LAN)

through a network hub. Refer to the table below for the Ethernet port LED indications.

Realtek 2.5G Ethernet port LED indications

14 15 1613129 11 10

5 6 7 84

Activity Link LED Speed LED

Status Description Status Description

OFF No link OFF No link

GREEN Linked GREEN 2.5 Gbps connection

BLINKING Data activity ORANGE 1 Gbps / 100 Mbps / 10

Mbps connection

ACT/LINK

LED

SPEED

LED

Ethernet port

5. DisplayPort. This port is for a DisplayPort-compatible device.

6. Center / Subwoofer port (orange). This port connects the center/subwoofer speakers.

7. Rear Speaker Out port (black). This port connects the rear speakers in a 4 channel,

5.1 channel, or 7.1 channel audio conguration.

8. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio

sources.

1-8 Chapter 1: Product introduction

9. BIOS FlashBackTM button. Press the BIOS FlashBackTM button for three seconds until

the FlashBackTM LED blinks three times, indicating that the BIOS FlashBackTM function

is enabled.

To use BIOS FlashBack™:

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

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

motherboard.

3) Manually rename the le as TG550PW2.CAP, or launch the BIOSRenamer.exe

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

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

download a BIOS le for a BIOS FlashBack™ compatible motherboard.

4) Shut down your computer.

5) Press the BIOS FlashBack™ button for three (3) seconds until the BIOS FlashBack™

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

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

10. USB 3.2 Gen 1 (up to 5Gbps) ports. These 9-pin Universal Serial Bus (USB) ports

connect to USB 3.2 Gen 1 devices.

11. USB 3.2 Gen 2 (up to 10Gbps) port (USB Type-C®). This 9-pin Universal Serial Bus

3.2 (USB 3.2) port is for USB 3.2 Gen 2 Type-C® devices.

12. HDMITM port. This port is for a High-Denition Multimedia Interface (HDMITM)

connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other

protected content.

13. Wi-Fi ports. These ports connect to Wi-Fi antennas.

• Ensure that the ASUS 2x2 dual-band Wi-Fi moving antenna is securely installed to the

Wi-Fi ports.

• Ensure that the antenna is at least 20 cm away from all persons.

14. Optical S/PDIF Out port. This port connects to the optical S/PDIF devices.

15. Microphone port (pink). This port connects a microphone.

16. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel,

5.1-channel, and 7.1-channel congurations, the function of this port becomes Front

Speaker Out.

Refer to the audio conguration table for the function of the audio ports in 2, 4, 5.1, or

7.1-channel conguration.

Audio 2, 4, 5.1 or 7.1-channel conguration

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

Pink Mic In Mic In Mic In Mic In

Orange – – Center/Subwoofer Center/Subwoofer

Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out

ASUS TUF GAMING B550-PLUS WIFI II 1-9

1.3 Central Processing Unit (CPU)

This motherboard comes with an AMD Socket AM4 designed for

AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/

3000 Series Desktop Processors.

Unplug all power cables before installing the CPU.

The AM4 socket has a different pinout design. Ensure that you use a CPU designed for the

AM4 socket. The CPU ts 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!

Installing the CPU

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

heatsink and fan if necessary.

1-10 Chapter 1: Product introduction

1.4 System memory

This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module

(DIMM) sockets. The gure illustrates the location of the DDR4 DIMM sockets:

Channel Sockets

Channel A DIMM_A1 & DIMM_A2*

Channel B DIMM_B1 & DIMM_B2*

DIMM_A2*

DIMM_A1

DIMM_B2*

DIMM_B1

• You may install varying memory sizes in Channel A and Channel B. The system

maps the total size of the lower-sized channel for the dual-channel conguration. Any

excess memory from the higher-sized channel is then mapped for single-channel

operation.

• Always install DIMMs with the same CAS latency. For optimal compatibility, we

recommend that you install memory modules of the same version or date code (D/C)

from the same vendor. Check with the retailer to get the correct 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.

• 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 efcient memory cooling system to support a full

memory load.

• Refer to www.asus.com for the latest Memory QVL (Qualied Vendors Lists), and

memory frequency support depends on the CPU types.

Recommended memory congurations

DIMM_B2*

DIMM_A1

DIMM_A2*

DIMM_B2*

DIMM_A2*

DIMM_B1

DIMM_B2*

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