ASUS ROG Strix B550-E Gaming Service Manual

ROG STRIX		Motherboard
B550-E GAMING

E16546

First Edition

April 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, 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.

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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/

or

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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.

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ii

Contents

Safety information......................................................................................................	iv
About this guide...........................................................................................................	v
ROG STRIX B550-E GAMING specifications summary...........................................	vi
Connectors with shared bandwidth...........................................................................	x
Package contents.......................................................................................................	xi
Installation tools and components...........................................................................	xii

Chapter 1:		Product Introduction
1.1	Before you proceed....................................................................................		1-1
1.2	Motherboard layout....................................................................................		1-2
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..........................................................	2-2
	2.1.3	DIMM installation.........................................................................	2-5
	2.1.4	M.2 installation.............................................................................	2-6
	2.1.5	Motherboard installation..............................................................	2-8
	2.1.6	ATX power connection.................................................................	2-9
	2.1.7	SATA device connection..............................................................	2-9
	2.1.8	Front I/O connector....................................................................	2-10
	2.1.9	Expansion card installation........................................................	2-11
	2.1.10	Wi-Fi antenna installation..........................................................	2-13
2.2	BIOS update utility....................................................................................		2-14
2.3	Motherboard rear and audio connections..............................................		2-15
	2.3.1	Rear I/O connection...................................................................	2-15
	2.3.2	Audio I/O connections................................................................	2-17
2.4	Starting up for the first time....................................................................		2-19
2.5	Turning off the computer.........................................................................		2-19
Chapter 3:		BIOS and RAID Support
3.1	Knowing BIOS.............................................................................................		3-1
3.2	BIOS setup program...................................................................................		3-2
3.3	EZ Update....................................................................................................		3-2
3.4	ASUS EZ Flash 3.........................................................................................		3-3
3.5	ASUS CrashFree BIOS 3............................................................................		3-4
3.6	RAID configurations...................................................................................		3-5
Appendix
Q-Code table.............................................................................................................			A-1
Notices	.....................................................................................................................		A-5
ASUS contact information....................................................................................			A-12

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 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.

•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 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 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 (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.

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

ROG STRIX B550-E GAMING specifications summary

	CPU	AMD Socket AM4 for 3rd Gen AMD Ryzen™ Processors*
		* Refer to www.asus.com for CPU support list.
	Chipset	AMD B550 Chipset
		3rd Gen AMD Ryzen™ Processors
		4 x DIMM, Max. 128GB, 4400(O.C)/4266(O.C)/4133(O.C)/4000(O.C)/
		3866(O.C)/3600(O.C)/3466(O.C.)/3200/3000/2800/2666/2400/2133
	Memory	MHz, Un-buffered Memory*
		Dual Channel Memory Architecture
		OptiMem II
		* 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 HDMI™ 2.1 (4K@60HZ)*
		* Graphics specifications may vary between CPU types.
		3rd Gen AMD Ryzen™ Processors
		2 x PCIe 4.0 x16 SafeSlots (support x16 or x8/x8 modes)
	Expansion Slots	AMD B550 chipset
		1 x PCIe 3.0 x16 slot (supports x4 mode)*
		2 x PCIe 3.0 x1 slots
		* PCIEX16_3 share bandwidth with PCIEX1_1 and PCIEX1_2.
	Multi-GPU	Supports AMD 3-way CrossFireX™ Technology
		Supports NVIDIA 2-Way SLI® 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)
	Storage	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
		* When M.2_2 slot is populated, SATA6G_5/6 ports will be disabled.
	Ethernet	1 x Intel® I225-V 2.5Gb Ethernet
		ASUS LANGuard
		Intel® Wi-Fi 6 AX200
		2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) support 1024QAM/OFDMA/MU-MIMO
	Wireless & Bluetooth	Supports up to 2.4/5GHz transfer speed
		Supports channel bandwidth: HT20/HT40/HT80/HT160
		Bluetooth v5.1
		*BT 5.1 function will be ready in Windows 10 build 19041 or later.
		(continued on the next page)

vi

ROG STRIX B550-E GAMING specifications summary

		Rear USB (Total 8 ports)
		3 x USB 3.2 Gen 2 ports (2 x Type-A + 1 x Type-C®)
		4 x USB 2.0 ports (4 x Type-A)
	USB	1 x USB 2.0 port (1 x audio USB Type-C®)
		Front USB (Total 7 ports)
		1 x USB 3.2 Gen 2 front panel connector (supports USB Type-C®)
		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
		ROG SupremeFX 7.1-Channel High Definition Audio CODEC S1220A
		- Impedance sense for front and rear headphone outputs
		- Jack-detection, Multi-streaming, Front Panel Jack-retasking
		- High quality 120 dB SNR stereo playback output and 113 dB SNR
		recording input
		- Supports up to 32-Bit/192kHz playback*
	Audio	Audio Features:
		- SupremeFX Shielding Technology
		- Dual OP Amplifiers
		- Rear audio USB Type-C® port
		- Premium Japanese audio capacitors
		- Audio cover
		* Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for
		7.1-Channel audio.
		3 x USB 3.2 Gen 2 ports (2 x Type-A + 1 x USB Type-C®)
		4 x USB 2.0 ports
		1 x USB 2.0 port (1 x audio USB Type-C®)
		1 x DisplayPort
	Back Panel I/O Ports	1 x HDMI™ port
		1 x ASUS Wi-Fi Module
		1 x Intel® I225-V Ethernet port
		5 x Audio jacks
		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
	Internal I/O connectors	Power related
		1 x 24-pin Main Power connector
		1 x 8-pin +12V Power connector
		1 x 4-pin +12V power connector
		Storage related
		2 x M.2 slots (Key M)
		6 x SATA 6Gb/s ports
		(continued on the next page)

vii

ROG STRIX B550-E GAMING specifications summary

USB

1 x USB 3.2 Gen 2 front panel connector (supports USB Type-C®)

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
	Internal I/O connectors	2 x AURA RGB headers
		1 x Clear CMOS header
		1 x Front Panel Audio header (AAFP)
		1 x S/PDIF header
		1 x Speaker header
		1 x 10-1 pin System Panel header
		1 x Thermal sensor header
		1 x Thunderbolt header

ASUS Q-Design

- ASUS Q-CODE

- ASUS Q-DIMM

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

- ASUS Q-Slot

	ASUS Thermal Solution
	- Aluminum M.2 heatsink
	ASUS EZ DIY
Special Features	- BIOS FlashBack™ button
	- BIOS FlashBack™ LED
	- Clear CMOS header
	- ProCool
	- Pre-mounted I/O shield
	- SafeSlot
	AURA Sync
	- Standard RGB header
	- Addressable Gen 2 RGB header
	Rear audio USB Type-C® connector
	(continued on the next page)

viii

ROG STRIX B550-E GAMING specifications summary

ROG Exclusive Software

- RAMCache III

- ROG CPU-Z

- GameFirst VI

- Sonic Studio III + Sonic Studio Virtual Mixer - Sonic Radar III

- DTS® Sound Unbound - Overwolf

- Anti-virus software

	ASUS Exclusive Software
	Armoury Crate
	- Aura Creator
	- Aura Sync
	- Ai Noise Cancelling Microphone
Software Features	AI Suite 3:
	- 5-way Optimization
	TPU
	EPU
	DIGI+ VRM
	Fan Xpert 4
	Turbo APP
	- EZ update
	WinRAR

		UEFI BIOS
		ASUS EZ DIY
		- ASUS CrashFree BIOS 3
		- ASUS EZ Flash 3
		- ASUS UEFI BIOS EZ Mode
		- Flexkey
	BIOS	256 Mb Flash ROM, UEFI AMI BIOS
	Manageability	WOL by PME, PXE
	Operating System	Windows® 10 - 64 bit
	Form Factor	ATX Form Factor
		12 inch x 9.6 inch (30.5 cm x 24.4 cm)

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

ix

Connectors with shared bandwidth

RGB_HEADER1

FLBK_LED1

CPU_FAN AIO_PUMP

BIOS_FLBK

EATX12V_2 EATX12V_1

CPU_OPT

USB_E5-8

U32G2_C7

LAN_U32G2_34

HDMI	Intel®
_DP	I225-V
M.2(WIFI)
AUDIO	LED1_CON
AUDIO_TYPE-C
	22110
ALC
210

								BOOT
								VGA
								CPU
								DRAM
			SOCKET AM4	DIMM B1 (64bit, 288-pin module)	DIMM B2* (64bit, 288-pin module)	DIMM A1 (64bit, 288-pin module)	DIMM A2* (64bit, 288-pin module)	EATXPWR	ADD GEN 2 1
FAN1				DDR4	DDR4	DDR4	DDR4	U32G1 12	7
CHA_	256Mb
	BIOS								USB3.2
2280	2260	2242	1(SOCKET3)
			M.2_
	PCIEX16_1

						AMD
A	Super	PCIEX1_1	BATTERY			B550
	I/O
							12
			PCIEX16_2				SATA6G
						2(SOCKET3)M.2	34
A		PCIEX1_2	TPU				56SATA6GSATA6G_
			22110	2280	2260	2242
A			PCIEX16_3		ARUR
							TB_HEADER

	SPDIF_OUT		CHA_FAN2	CHA_FAN3		USB_E34 USB_E12
					T_SENSOR
				ADD GEN 2_2		SPEAKER
AAFP		Q_CODE	RGB_HEADER2			CLRTC	F_PANEL

Configuration			1	2
		PCIEX16_3	x4	x2
A		PCIEX1_1	-	x1
		PCIEX1_2	-	x1
Configuration			1	2
B		M.2_2	PCIe 3.0 x4 / SATA	-
		SATA6G_56	-	v

B

B

•PCIEX16_3 shares bandwidth with PCIEX1_1 and PCIEX1_2. When PCIEX16_3 runs x4 mode, PCIEX1_1 and PCIEX1_2 will be disabled. PCIEX16_3 will run x2 mode when PCIEX1_1 or PCIEX1_2 is occupied.

•When M.2_2 slot is populated, SATA6G_56 will be disabled.

x

Package contents

Check your motherboard package for the following items.

	Motherboard	1 x ROG STRIX B550-E GAMING motherboard
		1 x Addressable RGB extension cable
	Cables	1 x ROG audio USB Type-C® cable
		1 x RGB extension cable
		4 x SATA 6Gb/s cables
		1 x Cable ties pack
		1 x M.2 Rubber package
		1 x M.2 SSD screw package
	Miscellaneous	1 x ROG key chain
		1 x ROG Strix stickers
		1 x ROG Strix thank you card
		1 x ASUS 2x2 dual band Wi-Fi moving antennas
	Installation Media	1 x Support DVD
	Documentation	1 x User manual

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

xi

Installation tools and components

Phillips (cross) screwdriver

PC chassis

Power supply unit

AMD AM4 CPU

AMD AM4/AM3 compatible CPU Fan

DDR4 DIMM

SATA hard disk drive

SATA optical disc drive (optional)

Graphics card (optional)

M.2 SSD module (optional)

1 Bag of screws

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

xii

Product Introduction

1

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.

•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.

Chapter 1

ROG STRIX B550-E GAMING

1-1

1 Chapter

1.2Motherboard layout

		5		4
21	FLBK_LED1
	BIOS_FLBK	EATX12V_2 EATX12V_1
	USB_E5-8
	U32G2_C7
	LAN_U32G2_34
15
	HDMI	Intel®
	_DP	I225-V
	M.2(WIFI)
	AUDIO	LED1 CON
			FAN1
	AUDIO_TYPE-C
			CHA	256Mb
				BIOS

1

24.4cm(9.6in)

SOCKET AM4

6				1(SOCKET3)
22110	2280	2260	2242
ALC				M.2_
210

PCIEX16_1

4 12 2

RGB_HEADER1

CPU_FAN AIO_PUMP

CPU_OPT

				BOOT		23
				CPU
				VGA
				DRAM
					GEN 2 1	11
(64bit,B1 288-pin module)	(64bit,B2* 288-pin module)	(64bit,A1 288-pin module)	(64bit,A2* 288-pin module)		ADD
				EATXPWR		5
DIMM_	DIMM_	DIMM_	DIMM_	U32G112
DDR4	DDR4	DDR4	DDR4			9
					7	8
					USB3.2
						30.5cm(12in)

3					AMD
Super	PCIEX1_1	BATTERY			B550	6
I/O
						12
		PCIEX16_2				SATA6G
					2(SOCKET3)M.2	34
						56SATA6GSATA6G_
						7
	PCIEX1_2	TPU
		22110	2280	2260	2242
		PCIEX16_3		ARUR
						TB_HEADER

	SPDIF_OUT		CHA_FAN2	CHA_FAN3		USB_E34 USB_E12
					T_SENSOR
				ADD GEN 2_2		SPEAKER
AAFP		Q_CODE	RGB_HEADER2			CLRTC	F_PANEL

															13
	16	14	22		4	12	11	4	19	10		20				17	18

1-2	Chapter 1: Product Introduction

Layout contents

1.CPU socket

2.DIMM slots

3.Expansion slots

4.Fan and Pump headers

5.Power connectors

6.M.2 slot

7.SATA 6Gb/s ports

8.USB 3.2 Gen 2 Front Panel connector

9.USB 3.2 Gen 1 header

10.USB 2.0 header

11.AURA Addressable Gen2 header

12.AURA RGB header

13.Clear CMOS header

14.Front Panel Audio header

15.LED connector

16.S/PDIF Out header

17.Speaker header

18.System Panel header

19. Thermal Sensor header

20. Thunderbolt header

21.BIOS FlashBack™ LED

22.Q Code LED

23. Q-LEDs

Page

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Chapter 1

ROG STRIX B550-E GAMING

1-3

1 Chapter

1.CPU socket

The motherboard comes with an AMD Socket AM4 for 3rd Gen AMD Ryzen™ Processors.

SOCKET AM4

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

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

1-4	Chapter 1: Product Introduction

2.DIMM slots

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.

DIMM B1 DIMM B2*

DIMM A1 DIMM A2*

Recommended memory configurations

Chapter 1

ROG STRIX B550-E GAMING

1-5

1 Chapter

Memory configurations

You may install 4 GB, 8 GB, 16 GB, and 32 GB unbuffered DDR4 DIMMs into the DIMM sockets.

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 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.

1-6	Chapter 1: Product Introduction

3.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.

Chapter 1

1	PCIEX16_1
2	PCIEX1_1
3	PCIEX16_2
4	PCIEX1_2
5	PCIEX16_3

Please refer to the following table for the recommended VGA configuration.

Recommended VGA configuration

Slot Description		Single VGA	Dual VGA	Triple VGA
1.	PCIe 4.0 x16_1	x16	x8	x8
3.	PCIe 4.0 x16_2	-	x8	x8
5.	PCIe 3.0 x16_3	-	-	x4

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

•Ensure to connect the 8-pin and 4-pin power plug when running CrossFireX™ mode.

•Connect a chassis fan to the chassis fan connectors when using multiple graphics cards for better thermal environment.

PCIEX16_3 shares bandwidth with PCIEX1_1 and PCIEX1_2.

ROG STRIX B550-E GAMING

1-7

1 Chapter

Hyper M.2 X16 series card configuration

	Slot	PCIe bifurcation settings in PCIe x16 slots with different Ryzen™
		CPUs
		3rd Gen AMD Ryzen™ Processors (Support PCIe Gen 4 SSDs)
		Supported SSDs
	PCIEX16_1	4 or 2
	PCIEX16_2	0 or 2

•Hyper M.2 X16 series card is purchased separately.

•When using 3rd Gen AMD Ryzen™ 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.

1-8	Chapter 1: Product Introduction

4.Fan and Pump headers

The Fan and Pump headers allow you to connect fans or pumps to cool the system.

AB

C

D

ACPU_FAN

BAIO_PUMP

CCPU_OPT

DCHA_FAN1

ECHA_FAN2

FCHA_FAN3

GND

FAN PWR

FAN IN

FAN PWM

FAN PWM FAN IN FAN PWR

GND

FAN PWM

FAN IN

FAN PWR

GND

E

F

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

inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan headers!

•Ensure the cable is fully inserted into the header.

For water cooling kits, connect the pump connector to the AIO_PUMP header.

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	-

Chapter 1

ROG STRIX B550-E GAMING

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5.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.

Chapter			+DCIN +DCIN		DC+12V DC+12V DC+12V DC+12V
	A	A	EATX12V_2	B	EATX12V_1
		B
1		C	PIN 1		PIN 1
			GND GND		GND GND GND GND

C EATXPWR

+3 Volts		GND
+12	Volts	+5 Volts
+12	Volts	+5 Volts
+5V Standby		+5 Volts
Power OK		-5 Volts
	GND	GND
+5 Volts		GND
	GND	GND
+5 Volts		PSON#
	GND	GND
+3	Volts	-12 Volts
+3	Volts	+3 Volts
	PIN 1

•DO NOT connect the 4-pin power plug only, the motherboard may overheat under heavy usage.

•Ensure to connect the 8-pin power plug, or connect both the 8-pin and 4-pin power plugs.

•For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12V Specification 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 configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

•If you want to use two or more high-end PCI Express x16 cards, use a PSU with 1000W power or above to ensure the system stability.

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6.M.2 slot

The M.2 slot allows you to install M.2 SSD modules.

Chapter 1

A

	B	A	M.2_1(SOCKET3)
		B	M.2_2(SOCKET3)

•M.2_1 slot supports PCIe 4.0 x4 and SATA mode Key M design and type 2242/2260 /2280/22110 storage devices.

•M.2_2 slot supports PCIe 3.0 x4 and SATA mode Key M design and type 2242/2260/2280/ 22110 storage devices.

•When M.2_2 slot is populated , SATA6G_5/6 will be disabled.

The M.2 SSD module is purchased separately.

ROG STRIX B550-E GAMING

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