ASRock B550 User manual

Version 1.0

Published May 2020

Copyright©2020 ASRock INC. All rights reserved.

Copyright Notice:

No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.

Products and corporate names appearing in this documentation 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.

Disclaimer:

Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.

In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.

is 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.

CALIFORNIA, USA ONLY

e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”

ASRock Website: http://www.asrock.com

AUSTRALIA ONLY

Our goods come with guarantees that cannot be excluded under the Australian
Consumer Law. You are entitled to a replacement or refund for a major failure and
compensation for any other reasonably foreseeable loss or damage caused by our
goods. You are also entitled to have the goods repaired or replaced if the goods fail
to be of acceptable quality and the failure does not amount to a major failure. If
you require assistance please call ASRock Tel : [phone] ext.123 (Standard
International call charges apply)

e terms HDMI® and HDMI High-Denition Multimedia Interface, and the
HDMI logo are trademarks or registered trademarks of HDMI Licensing LLC in the
United States and other countries.

Contents

Chapter 1 Introduction 1

1.1 Package Contents 1

1.2 Specications 2

1.3 Motherboard Layout 8

1.4 I/O Panel 10

Chapter 2 Installation 12

2.1 Installing the CPU 13

2.2 Installing the CPU Fan and Heatsink 15

2.3 Installing Memory Modules (DIMM) 23

2.4 Expansion Slots (PCI Express Slots) 26

2.5 Jumpers Setup 27

2.6 Onboard Headers and Connectors 28

2.7 Dr. Debug 33

2.8 CrossFireXTM and Quad CrossFireXTM Operation Guide 39

2.8.1 Installing Two CrossFireXTM-Ready Graphics Cards 39

2.8.2 Driver Installation and Setup 41

2.9 M.2 WiFi/BT Module Installation Guide (M2_WIFI_1) 42

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_1) 44

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_2) 47

Chapter 3 Software and Utilities Operation 50

3.1 Installing Drivers 50

3.2 ASRock Motherboard Utility (A-Tuning) 51

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 51

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 51

3.3 ASRock Live Update & APP Shop 54

3.3.1 UI Overview 54

3.3.2 Apps 55

3.3.3 BIOS & Drivers 58

3.3.4 Setting 59

3.4 Nahimic Audio 60

3.5 ASRock Polychrome SYNC 61

Chapter 4 UEFI SETUP UTILITY 64

4.1 Introduction 64

4.1.1 UEFI Menu Bar 64

4.1.2 Navigation Keys 65

4.2 Main Screen 66

4.3 OC Tweaker Screen 67

4.4 Advanced Screen 71

4.4.1 CPU Conguration 72

4.4.2 Onboard Devices Conguration 73

4.4.3 Storage Conguration 75

4.4.4 ACPI Conguration 76

4.4.5 Trusted Computing 77

4.4.6 AMD PBS 78

4.4.7 AMD Overclocking 79

4.4.8 AMD CBS 80

4.5 Tools 81

4.6 Hardware Health Event Monitoring Screen 82

4.7 Security Screen 85

4.8 Boot Screen 86

4.9 Exit Screen 89

Chapter 1 Introduction

ank you for purchasing ASRock B550 Steel Legend motherboard, a reliable

motherboard produced under ASRock’s consistently stringent quality control.

It delivers excellent performance with robust design conforming to ASRock’s

commitment to quality and endurance.

In this documentation, Chapter 1 and 2 contains the introduction of the

motherboard and step-by-step installation guides. Chapter 3 contains the operation

guide of the soware and utilities. Chapter 4 contains the conguration guide of

the BIOS setup.

Becau se the motherboard specications and the BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In case any
modications of this documentation occur, the updated version will be available on
ASRock’s website w ithout f urther notice. If you require technical support relate d to
this motherboard, please vi sit our website for s pecic information about the model
you are using. You may nd the l atest VGA cards and CPU suppor t list on ASRock’s
website a s well. ASRock website ht tp://www.a srock.com.

B550 Steel Legend

1.1 Package Contents

ASRock B550 Steel Legend Motherboard (ATX Form Factor)

•

ASRock B550 Steel Legend Quick Installation Guide

•

ASRock B550 Steel Legend Support CD

•

2 x Serial ATA (SATA) Data Cables (Optional)

•

3 x Screws for M.2 Sockets (Optional)

•

2 x Standos for M.2 Sockets (Optional)

•

English

1

English

1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

* Not compatible with AMD RyzenTM 5 3400G and RyzenTM 3

3200G.

•

•

•

•

•

•

•

* Please refer to Memory Support List on ASRock’s website for

more information. (http://www.asrock.com/)

* Please refer to page 23 for DDR4 UDIMM maximum

frequency support.

•

•

•

ATX Form Factor

2oz Copper PCB

Supports 3rd Gen AMD AM4 RyzenTM / future AMD RyzenTM

Processors (3000 and 4000 Series Processors)*

Digi Power design

14 Power Phase design

AMD B550

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

AMD Ryzen series CPUs (Matisse) support DDR4 4733+

(OC)/4666(OC)/4600(OC)/4533(OC)/4466(OC)/4400

(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000

(OC)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/3466

(OC)/3200/2933/2667/2400/2133 ECC & non-ECC, un-

buered memory*

AMD Ryzen series APUs (Renoir) support DDR4 4733+

(OC)/4666(OC)/4600(OC)/4533(OC)/4466(OC)/4400

(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000

(OC)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/3466

(OC)/3200/2933/2667/2400/2133 ECC & non-ECC, un-

buered memory*

Max. capacity of system memory: 128GB

Supports Extreme Memory Prole (XMP) memory modules

15μ Gold Contact in DIMM Slots

2

B550 Steel Legend

Expansion
Slot

Graphics

AMD Ryzen series CPUs (Matisse)

2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3:

•

Gen3 x4 mode)*

AMD Ryzen series APUs (Renoir)

2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3:

•

Gen3 x4 mode)*

* Supports NVMe SSD as boot disks

2 x PCI Express 3.0 x1 Slots

•

Supports AMD Quad CrossFireXTM and CrossFireX

•

1 x M.2 Socket (Key E), supports ty pe 2230 WiFi/BT module

•

15μ Gold Contact in VGA PCIe Slot (PCIE1)

•

Integrated AMD RadeonTM Vega Series Graphics in Ryzen

•

Series APU*

* Actual support may vary by CPU

DirectX 12, Pixel Shader 5.0

•

Shared memory default 2GB. Max Shared memory supports

•

up to 16GB.

* e Max shared memory 16GB requires 32GB system memory

installed.

Dual graphics output: support HDMI and DisplayPort 1.4

•

ports by independent display controllers

Supports HDMI 2.1 with max. resolution up to 4K x 2K

•

(4096x2160) @ 60Hz

Supports DisplayPort 1.4 with max. resolution up to 5K

•

(5120x2880)@120Hz

Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and

•

HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant

HDMI monitor is required)

Supports HDR (High Dynamic Range) with HDMI 2.1

•

Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4

•

Ports

Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and

•

DisplayPort 1.4 Ports

Supports Microso PlayReady®

•

TM

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3

Audio

LAN

7.1 CH HD Audio with Content Protection (Realtek

•

ALC1220 Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection

•

120dB SNR DAC with Dierential Amplier

•

NE5532 Premium Headset Amplier for Front Panel Audio

•

Connector (Supports up to 600 Ohm headsets)

Pure Power-In

•

Direct Drive Technology

•

PCB Isolate Shielding

•

Impedance Sensing on Rear Out port

•

Individual PCB Layers for R/L Audio Channel

•

Gold Audio Jacks

•

15μ Gold Audio Connector

•

Nahimic Audio

•

2.5 Gigabit LAN 10/100/1000/2500 Mb/s

•

Dragon RTL8125BG

•

Supports Dragon 2.5G LAN Soware

•

- Smart Auto Adjust Bandwidth Control

- Visual User Friendly UI

- Visual Network Usage Statistics

- Optimized Default Setting for Game, Browser, and

Streaming Modes

- User Customized Priority Control

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

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4

Rear Panel
I/O

2 x Antenna Ports (on I/O Panel Shield)

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

1 x Optica l SPDIF Out Port

•

1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (Supports ESD

•

Protection)

1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (Supports ESD

•

Protection)

Storage

2 x USB 3.2 Gen1 Ports (Supports ESD Protection)

•

4 x USB 2.0 Ports (Supports ESD Protection)

•

* Ultra USB Power is supported on USB_34 ports.

* ACPI wake-up function is not supported on USB_34 ports.

1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED

•

LED)

HD Audio Jacks: Rear Speaker / Central / Bass / Line in /

•

Front Speaker / Microphone (Gold Audio Jacks)

6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,

•

RAID 1 and RAID 10), NCQ, AHCI and Hot Plug*

* M2_ 2 and SATA3_5_6 share lanes. If either one of them is in

use, the other one will be disabled.

1 x Hyper M.2 Socket (M2_1), supports M Key ty pe

•

2230/2242/2260/2280 M.2 PCI Express module up to Gen4x4

(64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir)**

1 x M.2 Socket (M2_2), supports M Key type

•

2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module

and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)**

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

B550 Steel Legend

Connector

1 x SPI TPM Header

•

1 x Power LED and Speaker Header

•

2 x RGB LED Headers

•

* Support in total up to 12V/3A, 36W LED Strip

2 x Addressable LED Headers

•

* Support in total up to 5V/3A, 15W LED Strip

1 x CPU Fan Connector (4-pin)

•

* e CPU Fan Connector supports the CPU fan of ma ximum

1A (12W) fan power.

1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan

•

Speed Control)

* CPU_FAN2/WP_3A supports the water cooler fan of maxi-

mum 3A (36W) fan power.

5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan

•

Speed Control)

* e Chassis/Water Pump Fan supports the water cooler fan of

maximum 2A (24W) fan power.

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5

BIOS
Feature

* CPU_FAN2/WP_3A, CHA_FAN1/WP, CHA_FAN2/WP,

CHA_FAN3/WP, CHA_FAN4/WP and CHA_FAN5/WP can

auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector (Hi-Density Power Con-

•

nector)

1 x 8 pin 12V Power Connector (Hi-Density Power Connec-

•

tor)

1 x 4 pin 12V Power Connector (Hi-Density Power Connec-

•

tor)

1 x Front Panel Audio Connector (15μ Gold Audio Connec-

•

tor)

2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports

•

ESD Protection)

1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)

•

(Supports ESD Protection)

1 x Front Panel Type C USB 3.2 Gen1 Header (Supports ESD

•

Protection)

1 x Dr. Debug with LED

•

AMI UEFI Legal BIOS with GUI support

•

Supports “Plug and Play”

•

ACPI 5.1 compliance wake up events

•

Supports jumperfree

•

SMBIOS 2.3 support

•

CPU, CPU VDDCR_SOC, DRAM, VPPM, VTT_DDR O-

•

set, CPU VDD 1.8 Voltage Multi-adjustment

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6

Hardware
Monitor

Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa-

•

ter Pump Fans

Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water

•

Pump Fans

Quiet Fan (Auto adjust chassis fan speed by CPU tempera-

•

ture): CPU, CPU/Water Pump, Chassis/Water Pump Fans

Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/

•

Water Pump Fans

Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, CPU

•

VDDCR_SOC, DRAM, VPPM, CPU VDD 1.8V

Microso® Windows® 10 64-bit

OS

Certica­tions

* For detailed product information, please visit our website: http://ww w.asrock.com

Please realize that the re is a certain r isk involved with overclocking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technol ogy, or using
third-party overclocking tool s. Overclocking may aect your system’s stability, or
even cause dam age to the components and devices of your system. It should be done
at your own risk and expense. We are not responsible for poss ible damage caused by
overclocking.

•

FCC, CE

•

ErP/EuP ready (ErP/EuP ready power supply is required)

•

B550 Steel Legend

English

7

1.3 Motherboard Layout

English

8

No. Description

1 ATX 12V Power Connector (ATX12V1)

2 ATX 12V Power Connector (ATX12V2)

3 CPU Fan Connector (CPU_FAN1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

5 CPU/Water Pump Fan Connector (CPU_FAN2/WP_3A)

6 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

7 RGB LED Header (RGB_LED2)

8 Addressable LED Header (ADDR_LED2)

9 Chassis/Water Pump Fan Connector (CHA_FAN5/WP)

10 ATX Power Connector (ATXPWR1)

11 Front Panel Type C USB 3.2 Gen1 Header (USB31_TC_2)

12 USB 3.2 Gen1 Header (USB3_3_4)

13 Chassis/Water Pump Fan Connector (CHA_FAN4/WP)

14 SATA3 Connector (SATA3_2)

15 SATA3 Connector (SATA3_1)

16 SATA3 Connector (SATA3_3)

17 SATA3 Connector (SATA3_5)

18 SATA3 Connector (SATA3_6)

19 SATA3 Connector (SATA3_4)

20 Clear CMOS Jumper (CLRCMOS1)

21 System Panel Header (PANEL1)

22 Power LED and Speaker Header (SPK_PLED1)

23 USB 2.0 Header (USB_7_8)

24 USB 2.0 Header (USB_5_6)

25 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)

26 Chassis/Water Pump Fan Connector (CHA_FAN3/WP)

27 RGB LED Header (RGB_LED1)

28 Addressable LED Header (ADDR_LED1)

29 Front Panel Audio Header (HD_AUDIO1)

30 SPI TPM Header (SPI_TPM_J1)

31 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)

B550 Steel Legend

English

9

1.4 I/O Panel

1

7

2

3

4

658

15

14

13

12

11

910

No. Description No. Description

1 DisplayPort 1.4 9 Microphone (Pink)

2 PS/2 Mouse/Keyboard Port 10 Optical SPDIF Out Port

USB 3.2 Gen2 Type-A Port

3

(USB31_TA_1)

2.5G LAN RJ-45 Port

4

(Dragon RTL8125BG)*

11 USB 2.0 Ports (USB_34)***

USB 3.2 Gen2 Type-C Port

12

(USB31_TC_1)

5 Central / Bass (Orange) 13 USB 2.0 Ports (USB_12)

6 Rear Speaker (Black) 14 USB 3.2 Gen1 Ports (USB3_12)

7 Line In (Light Blue) 15 HDMI Port

8 Front Speaker (Lime)**

* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .

ACT/LINK L ED

SPEED LE D

LAN Por t

English

10

Activity / Link LED Speed LED

Status Description Status Description

O No Link O 10Mbps connection
Blinking Data Activity Orange 100Mbps/1Gbps connection

On Link Green 2.5Gbps connection

B550 Steel Legend

** If you use a 2- channel speaker, plea se connect the speake r’s plug into “Front Speaker Jack”. See the table below
for connection d etails in accordance w ith the type of speaker you use.

Audio Output

Channels

2 V -- -- --
4 V V -- --
6 V V V --
8 V V V V

*** Ultra USB Power is su pported on USB_ 34 ports. ACPI wake-up f unction is not supported on USB_34 ports.

Front Speaker

(No. 8)

Rear Speaker

(No. 6)

Central / Bass

(No. 5)

Line In

(No. 7)

11

English

Chapter 2 Installation

is is an ATX form factor motherboard. Before you install the motherboard, study

the conguration of your chassis to ensure that the motherboard ts into it.

Pre-installation Precautions

Take note of the following precautions before you install motherboard components

or change any motherboard settings.

Make sure to unplug the power cord before installing or removing the motherboard.

•

Failure to do so may cause physical injuries to you and damages to motherboard

components.

In order to avoid damage from static electricity to the motherboard’s components,

•

NEVER place your motherboard directly on a carpet. Also remember to use a grounded

wrist strap or touch a safety grounded object before you handle the components.

Hold components by the edges and do not touch the ICs.

•

Whenever you uninstall any components, place them on a grounded anti-static pad or

•

in the bag that comes with the components.

When placing screws to secure the motherboard to the chassis, please do not over-

•

tighten the screws! Doing so may damage the motherboard.

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12

2.1 Installing the CPU

Unplug all power cables be fore installing the CPU.

1

B550 Steel Legend

2

English

13

3

English

14

2.2 Installing the CPU Fan and Heatsink

Aer you install the CPU into this motherboard, it is necessary to install a larger

heatsink and cooling fan to dissipate heat. You also need to spray thermal grease

between the CPU and the heatsink to improve heat dissipation. Ma ke sure that the

CPU and the heatsink are securely fastened and in good contact with each other.

Please turn o the power or remove the power cord before changing a CPU or heatsink.

Installing the CPU Box Cooler SR1

1

B550 Steel Legend

2

English

15

3

English

16

4

1

N

FA

_

U

P

C

Installing the AM4 Box Cooler SR2

1

B550 Steel Legend

2

English

17

3

English

18

B550 Steel Legend

4

1

N

FA

_

U

P

C

*e diagrams shown here are for reference only. e headers might be in a dierent position on

your motherboard.

19

English

Installing the AM4 Box Cooler SR3

1

English

20

2

B550 Steel Legend

4

3

English

21

5

CPU_FAN1

6

English

22

1

N

FA

_

U

P

C

2

D

E

L

_

B

RG

+12V

*e diagrams shown here are for reference only. e headers might be in a dierent position

on your motherboard.

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,

and supports Dual Channel Memory Technology.

1. For dual channel conguration, you always need to install identica l (the same

brand, speed , size and chip-type) DDR4 DIMM pairs.

2. It is unable to activate Dual Channel Memor y Technology with only one or three
memor y module installed.

3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.

4. We suggest that you instal l the memory modules on DDR4_A2 and DDR4_ B2 rst
for better DRAM compatibility on 2 DIMM s conguration.

AMD non-XMP Memory Frequency Support

Ryzen Series CPUs (Matisse):

B550 Steel Legend

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 3200

- DR - - 3200

- SR - SR 3200

- DR - DR 3200

SR SR SR SR 2933

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2667

Frequency

(Mhz)

English

23

Ryzen Series APUs (Renoir):

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 3200

- DR - - 3200

- SR - SR 3200

- DR - DR 3200

SR SR SR SR 2933

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2667

SR: Single rank DIMM, 1Rx4 or 1R x8 on DIMM module label

DR: Dua l ran k DIMM, 2Rx4 or 2R x8 on DIMM module label

Frequency

(Mhz)

English

24

e DIMM only ts in one correct orientation. It will cause permanent dam age to
the mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation .

1

2

B550 Steel Legend

3

English

25

2.4 Expansion Slots (PCI Express Slots)

ere are 4 PCI Express slots on the motherboard.

Before installing an ex pansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Plea se read the documentation of the
expan sion card and mak e necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 4.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

PCIE4 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIe Slot Congurations

Ryzen series CPUs (Matisse):

PCIE1 PCIE3

Single Graphics Card Gen4x16 N/A

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26

Two Graphics Cards in

CrossFireXTM Mode

Gen4x16 Gen3x4

Ryzen series APUs (Renoir):

PCIE1 PCIE3

Single Graphics Card Gen3x16 N/A

Two Graphics Cards in

CrossFireXTM Mode

For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1/WP, CHA_ FAN2/WP, CHA_FAN3/WP, CHA_
FAN4/WP or CHA_ FA N5/WP) when using multiple g raphics cards.

Gen3x16 Gen3x4

2.5 Jumpers Setup

e illustration shows how jumpers are setup. When the jumper cap is placed on

the pins, the jumper is “Short”. If no jumper cap is placed on the pins, the jumper is

“Open”.

B550 Steel Legend

Clear CMOS Jumper

(CLRCMOS1)

(see p.8, No. 20)

CLRCMOS1 allows you to clear the data in CMOS. e data in CMOS includes

system setup information such as system password, date, time, and system setup

parameters. To clear and reset the system parameters to default setup, please

turn o the computer and unplug the power cord, then use a jumper cap to short

the pins on CLRCMOS1 for 3 seconds. Please remember to remove the jumper

cap aer clearing the CMOS. If you need to clear the CMOS when you just nish

updating the BIOS, you must boot up the system rst, and then shut it down

before you do the clear-CMOS action.

2-pin Jumper

Short: Clear CMOS

Open: Default

27

English

2.6 Onboard Headers and Connectors

PLE D-

SPE AK ER

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over
these header s and connectors. Placing jumper caps over the headers and connectors
will cause permanent damage to the motherboard.

System Panel Header

(9-pin PANEL1)

(see p.8, No. 21)

PWRBTN (Power Button):

Connec t to the power button on the chassi s front panel. You may congure the way
to turn o your system using the powe r button.

RESET (Reset Button):

Connec t to the reset button on the chassi s front panel. Press the reset button to
restar t the computer if the computer freezes and fails to perform a nor mal restart.

PLED (Syste m Power LED):

Connec t to the power status indicator on the chassis front panel. e LED i s on when
the system is ope rating. e LED keeps blinking when the system i s in S1/S3 sleep
state. e LED is o when the system is in S4 sleep state or powered o (S5).

HDLED (Ha rd Drive Activity LED):

Connec t to the hard drive ac tivity LED on the chassis front panel. e LED is on
when the hard drive i s reading or writing data.

e front panel de sign may dier by chassis. A front pane l module mainly consists
of power button , reset button, power LED, hard dr ive activity LED, speaker and etc.
When connecting your chassis front panel module to this head er, make sure the wire
assig nments and the pin assig nments are matched correctly.

1

PLE D+

PLE D-

HDL ED-

HDL ED+

PWR BTN #

GND

RES ET#

GND

GND

Connect the power

button, reset button and

system status indicator on

the chassis to this header

according to the pin

assignments below. Note

the positive and negative

pins before connecting

the cables.

English

28

Power LED and Speaker

Header

(7-pin SPK_PLED1)

(see p.8, No. 22)

DUM MY
+5V

1

PLE D+

DUM MY

PLE D+

Please connect the

chassis power LED and

the chassis speaker to this

header.

B550 Steel Legend

Serial ATA3 Connectors

(SATA3_1:

see p.8, No. 15)

(SATA3_2:

see p.8, No. 14)

(SATA3_3:

see p.8, No. 16)

(SATA3_4:

see p.8, No. 19)

(SATA3_5:

see p.8, No. 17)

(SATA3_6:

see p.8, No. 18)

USB 2.0 Headers

(9-pin USB_5_6)

(see p.8, No. 24)

(9-pin USB_7_8)

(see p.8, No. 23)

USB 3.2 Gen1 Header

(19-pin USB3_3_4)

(see p.8, No. 12)

SATA3_2

SATA3_4

SATA3_6

USB _PW R

1

USB _PW R

Vbus

IntA _PA_S SRX-

IntA _PA_S SRX+

GND

IntA _PA_S STX-

IntA _PA_S STX+

GND

IntA _PA_D -

IntA _PA_D +

ese six SATA3

connectors support SATA

data cables for internal

SATA3_1

storage devices with up to

6.0 Gb/s data transfer rate.

*M2_2 and SATA3_5_6

SATA3_3

share lanes. If either one

of them is in use, the other

SATA3_5

one will be disabled.

P-

P+

GND

DUM MY

GND

P+

P-

VbusVbus

IntA _PB_ SSRX -

IntA _PB_ SSRX +

GND

IntA _PB_ SSTX -

IntA _PB_ SSTX +

GND

IntA _PB_ D-

IntA _PB_ D+

Dumm y

1

ere are two headers

on this motherboard.

Each USB 2.0 header can

support two ports.

ere is one header on

this motherboard. is

USB 3.2 Gen1 header can

support two ports.

Front Panel Type C USB

3.2 Gen1 Header

(20-pin USB31_TC_2)

(see p.8, No. 11)

USB Type-C Cable

ere is one Front

Panel Type C USB 3.2

Gen1 Header on this

motherboard. is header

is used for connecting a

USB 3.2 Gen1 module for

additional USB 3.2 Gen1

ports.

English

29

Front Panel Audio Header

(9-pin HD_AUDIO1)

(see p.8, No. 29)

1. High Denition Audio supports Jack Sensing, but the panel wire on the chassis
must support HDA to function correctly. Please follow the instructions in our
manual and chassis manual to install your system.

2. If you use an AC’97 audio panel, please install it to the front panel audio heade r by
the steps below:
A. Connect Mic_IN (MIC) to MIC2_ L.
B. Conne ct Audio_R (RIN) to OUT2_R and Audio_ L (LIN) to OUT2_ L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_ RET and OUT_RET are for the HD audio panel only. You don’t need to
connec t them for the AC’97 audio panel.
E. To activate the front mic, go to the “FrontMic” Tab in the Realtek Control panel
and adju st “Recording Volume”.

1

GND

PRE SEN CE#

MIC 2_R

MIC 2_L

MIC _RE T

J_S ENS E

OUT 2_R

OUT _RE T

OUT 2_L

is header is for

connecting audio devices

to the front audio panel.

English

30

Chassis Water Pump Fan

Connectors

(4-pin CHA_FAN1/WP)

(see p.8, No. 31)

(4-pin CHA_FAN2/WP)

(see p.8, No. 25)

(4-pin CHA_FAN3/WP)

(see p.8, No. 26)

(4-pin CHA_FAN4/WP)

(see p.8, No. 13)

(4-pin CHA_FAN5/WP)

(see p.8, No. 9)

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.8, No. 3)

FAN _SP EED _C ONT ROL

CHA _FA N_S PE ED

FAN _VO LT AGE

GND

FAN _VO LT AGE

CHA _FA N_S PE ED

FAN _SP EED _C ONT ROL

1 2 3 4

GND

1

FAN_VOLTAGE

2
3

CHA _FA N_S PE ED

4

FAN _SP EED _C ONT ROL

+12 V

CPU _FA N_ SPE ED

GND

FAN _ SP EE D_C ON TRO L

1 2 3 4

GND

is motherboard

4
3

provides ve 4-Pin water

2
1

cooling chassis fan

connectors. If you plan to

connect a 3-Pin

water cooler fan, please

connect it to Pin 1-3.

is motherboard pro-

vides a 4-Pin CPU fan

(Quiet Fan) connector.

If you plan to connect a

3-Pin CPU fan, please

connect it to Pin 1-3.

chassis

B550 Steel Legend

FAN_ SPEED _CONT ROL

1

CPU Water Pump Fan

Connector

(4-pin CPU_FAN2/

WP_3A)

(see p.8, No. 5)

ATX Power Connector

(24-pin ATXPWR1)

(see p.8, No. 10)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.8, No. 1)

CPU _FAN_S PEED

FAN _VOLT AGE

GND

1 2 3 4

12

1

8 5

4

is motherboard

provides a 4-Pin water

cooling CPU fan

connector. If you plan

to connect a 3-Pin CPU

water cooler fan, please

connect it to Pin 1-3.

24

is motherboard pro-

vides a 24-pin ATX power

connector. To use a 20-pin

ATX power supply, please

plug it along Pin 1 and Pin

13

13.

is motherboard

provides a 8-pin ATX 12V

power connector. To use a

4-pin ATX power supply,

please plug it along Pin 1

and Pin 5.

*Warning: Please make

sure that the power cable

connected is for the CPU

and not the graphics

card. Do not plug the

PCIe power cable to this

connector.

ATX 12V Power

Connector

(4-pin ATX12V2)

(see p.8, No. 2)

Connecting an ATX

12V 4-pin cable here is

optional.

*e power supply plug

ts into this connector in

only one orientation.

English

31

SPI TPM Header

SPI _ DQ3

(13-pin SPI_TPM_J1)

(see p.8, No. 30)

1

SPI _ DQ2

+3. 3 V

Dum m y

SPI _ MIS O

SPI _ CS0

CLK

SPI _ MOS I

GND

RSM R ST#

RST #

TPM _ PIR Q

SPI _ TPM _CS #

is connector supports SPI

Trusted Platform Module (TPM)

system, which can securely store

keys, digital certicates, pass-

words, and data. A TPM system

also helps enhance network

security, protects digital

identities, and ensures platform

integrity.

English

RGB LED Headers

(4-pin RGB_LED1)

(see p.8, No. 27)

(4-pin RGB_LED2)

(see p.8, No. 7)

Addressable LED Headers

(3-pin ADDR_LED1)

(see p.8, No. 28)

(3-pin ADDR_LED2)

(see p.8, No. 8)

1

12V G R B

1

DO_ ADD R

VOU T

GND

ese two RGB headers are used

to connect RGB LED extension

cable which allows

users to choose from various LED

lighting eects.

Caution: Never install the RGB

LED cable in the wrong orienta-

tion; otherwise, the cable may

be damaged.

*Please refer to page 61 for

further instructions on these two

headers.

ese two

are used to connect

Addressable

Addressable

headers

LED extension cable which

allows users to choose from

various LED lighting eects.

Caution: Never install the

Addressable LED cable in the

wrong orientation; otherwise,

the cable may be damaged.

*Please refer to page 62 for

further instructions on this

header.

32

2.7 Dr. Debug

Dr. Debug is used to provide code information, which makes troubleshooting even

easier. Please see the diagrams below for reading the Dr. Debug codes.

Code Description

0x10 PEI_CORE_ STARTED

0x11 PEI_CAR_CPU_INIT

0x15 PEI_CAR_NB_INIT

0x19 PEI_CAR_SB_INIT

0x31 PEI_MEMORY_INSTALLED

0x32 PEI_CPU_INIT

0x33 PEI_CPU_CACHE_INIT

B550 Steel Legend

0x34 PEI_CPU_AP_INIT

0x35 PEI_CPU_BSP_SELECT

0x36 PEI_CPU_SMM_INIT

0x37 PEI_MEM_NB_INIT

0x3B PEI_MEM_SB_INIT

0x4F PEI_DXE_IPL_STARTED

0x60 DXE_CORE_STARTED

0x61 DXE_NVR AM_INIT

0x62 DXE_SBRUN_INIT

English

33

0x63 DXE_CPU_INIT

0x68 DXE_NB_HB_INIT

0x69 DXE_NB_INIT

0x6A DXE_NB_SMM_INIT

0x70 DXE_SB_INIT

0x71 DXE_SB_SMM_INIT

0x72 DXE_SB_DEVICES_INIT

0x78 DXE_ACPI_INIT

0x79 DXE_CSM_INIT

0x90 DXE_BDS_STARTED

0x91 DXE_BDS_CONNECT_DRIVERS

English

34

0x92 DXE_PCI_BUS_BEGIN

0x93 DXE_PCI_BUS_HPC_INIT

0x94 DXE_PCI_BUS_ENUM

0x95 DXE_PCI_BUS_REQUEST_RESOURCES

0x96 DXE_PCI_BUS_ASSIGN_RESOURCES

0x97 DXE_CON_OUT_CONNECT

0x98 DXE_CON_IN_CONNECT

0x99 DXE_SIO_INIT

0x9A DXE_USB_BEGIN

0x9B DXE _USB_RESET

0x9C DXE_USB_DETECT

0x9D DX E_USB_ENABLE

0xA0 DXE_IDE_BEGIN

0xA1 DXE_IDE_RESET

0xA2 DXE_IDE_DETECT

0xA3 DXE_IDE_ENABLE

B550 Steel Legend

0xA4 DXE_SCSI_BEGIN

0xA5 DXE_ SCSI_RESET

0xA6 DXE_SCSI_DETECT

0xA7 DXE_SCSI_ENABLE

0xA8 DXE_SETUP_VERIFYING_PASSWORD

0xA9 DXE_ SETUP_START

0xAB DXE_ SETUP_INPUT_WAIT

0xAD DXE_R EADY_TO_BOOT

0xAE DXE_LEGACY_BOOT

English

35

0xAF DXE _EXIT_BOOT_SERVICES

0xB0 RT_SET_VIRTUAL_ADDRESS_MAP_BEGIN

0xB1 RT_SET_VIRTUAL_ADDRESS_MAP_END

0xB2 DXE _LEGACY_OPROM_INIT

0xB3 DXE _RESET_SYSTEM

0xB4 DXE_USB_HOTPLUG

0xB5 DXE _PCI_BUS_HOTPLUG

0xB6 DXE_NVRAM_CLEANUP

0xB7 DXE _CONFIGURATION_RESET

0xF0 PEI_RECOVERY_AUTO

0xF1 PEI_RECOVERY_USER

English

36

0xF2 PEI_RECOVERY_STARTED

0xF3 PEI_RECOVERY_CAPSULE_FOUND

0xF4 PEI_RECOVERY_CAPSULE_LOADED

0xE0 PEI_S3_STARTED

0xE1 PEI_S3_BOOT_SCRIPT

0xE2 PEI_S3_VIDEO_R EPOST

0xE3 PEI_S3_OS_WAKE

0x50 PEI_MEMORY_INVALID_TYPE

0x53 PEI_MEMORY_NOT_DETECTED

0x55 PEI_MEMORY_NOT_INSTALLED

0x57 PEI_CPU_MISMATCH

0x58 PEI_CPU_SELF_TEST_FAILED

0x59 PEI_CPU_NO_MICROCODE

0x5A PEI_CPU_ER ROR

0x5B PEI_RESET_NOT_AVAILABLE

B550 Steel Legend

0xD0 DXE _CPU_ERROR

0xD1 DXE_NB_ERROR

0xD2 DXE_SB_ER ROR

0xD3 DXE_ARCH_PROTOCOL_NOT_AVAILABLE

0xD4 DXE _PCI_BUS_OUT_OF_R ESOURCES

0xD5 DXE_LEGACY_OPROM_NO_SPACE

0xD6 DXE_NO_CON_OUT

0xD7 DXE_NO_CON_IN

English

37

0xD8 DXE_INVALID_PASSWORD

0xD9 DXE _BOOT_OPTION_LOAD_ERROR

0xDA DXE _BOOT_OPTION_FAILED

0xDB DXE_FLASH_UPDATE_FAILED

0xDC DXE_RESET_NOT_AVAILABLE

0xE8 PEI_MEMORY_S3_RESUME_FAILED

0xE9 PEI_S3_RESUME_PPI_NOT_FOUND

0xEA PEI_S3_BOOT_SCRIPT_ERROR

0xEB PEI_S3_OS_WAKE _ERROR

English

38

2.8 CrossFireXTM and Quad CrossFireXTM Operation Guide

is motherboard supports CrossFireXTM and Quad CrossFireXTM that allows you

to install up to three identical PCI Express x16 graphics cards.

1. You should only use ide ntical CrossFireXTM-ready g raphics cards that are AM D
certied.

2. Make sure that your g raphics card driver supports AMD CrossFireXTM technology.
Download the drivers from the A MD’s website: www.amd.com

3. Make sure that your power supply unit (PSU) can provide at least th e minimum
power your syste m require s. It is recommended to use a AMD certied PSU. Plea se
refer to the AMD’s website for d etail s.

4. If you pair a 12-pipe CrossFireXTM Edition card with a 16-pipe card, both cards will
operate a s 12-pipe cards while in CrossFireXTM mode.

5. Dierent CrossFireXTM cards may require dierent method s to enable CrossFi­reXTM. Please refer to A MD graphics card manuals for de tailed installation guide.

2.8.1 Installing Two CrossFireXTM-Ready Graphics Cards

Step 1

Insert one graphics card into PCIE1 slot

and the other graphics card to PCIE3 slot.

Make sure that the cards are properly

seated on the slots.

B550 Steel Legend

CrossFire Bridge

Step 2

Connect two graphics cards by installing

a CrossFire Bridge on the CrossFire Bridge

Interconnects on the top of the graphics

cards. (e CrossFire Bridge is provided

with the graphics card you purchase, not

bundled with this motherboard. Please

refer to your graphics card vendor for

details.)

English

39

Step 3

Connect a VGA/DVI/DP/HDMI cable

from the monitor to the corresponding

port on the graphics card installed to the

PCIE1 slot.

English

40

2.8.2 Driver Installation and Setup

Step 1

Power on your computer and boot into OS.

Step 2

Remove the AMD drivers if you have any VGA drivers installed in your system.

e Catalyst Unins talle r is an optional download. We recommend using this utility
to uninstall any previously installed Catalyst drivers prior to installation. Pl ease
check A MD’s website for AMD driver update s.

Step 3

Install the required drivers and CATALYST Control Center then restart your

computer. Please check AMD’s website for details.

Step 4

Double-click the AMD Catalyst Control

AMD Catalyst Control Center

Center icon in the Windows® system tray.

B550 Steel Legend

Step 5

In the le pane, click Performance and

then AMD CrossFireXTM. en select

Enable AMD CrossFireX and click Apply.

Select the GPU number according to your

graphics card and click Apply.

English

41

2.9 M.2 WiFi/BT Module Installation Guide (M2_WIFI_1)

e M.2, also known as the Next Generation Form Factor (NGFF), is a small size and

versatile card edge connector that aims to replace mPCIe and mSATA. e M.2 Socket (Key

E) supports type 2230 WiFi/BT module.

* e M.2 socket does not support SATA M.2 SSDs.

Installing the WiFi/BT module

Step 1

Prepare a type 2230 WiFi/BT module

and the screw.

Step 2

Find the nut location to be used.

PCB Length: 3cm
Module Type: Type2230

English

42

A

B550 Steel Legend

Step 3

Gently insert the WiFi/BT module

into the M.2 slot. Please be aware

that the module only ts in one

orientation.

A

o

A

20

Step 4

Tighten the screw with a screwdriver

to secure the module into place.

Please do not overtighten the screw as

this might damage the module.

A

43

English

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_1)

The M.2, also known as the Next Generat ion Form Factor (NGFF), is a small size and

versatile card edge connector that aims to replace mPCIe and mSATA. e Hy per M.2

Socket (M2_1) supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to

Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir).

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_SSD (NGFF) module

and the screw.

English

4

3

2

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

1

ABCD

location to be used.

No. 1 2 3 4

Nut Location A B C D

PCB Length 3cm 4.2cm 6cm 8cm

Module Type Type 2230 Type 2242 Type2260 Type 2280

44

B550 Steel Legend

Step 3

Before installing a M.2 (NGFF) SSD

module, please loosen the screws to

remove the M.2 heatsink.

*Please remove the protective lms

on the bottom side of the M.2

heatsink before you install a M.2

SSD module.

Step 4

Prepare the M.2 stando that comes

with the package. en hand tighten

the stando into the desired nut

location on the motherboard. Align

and gently insert the M.2 (NGFF)

SSD module into the M.2 slot. Please

be aware that the M.2 (NGFF) SSD

module only ts in one orientation.

Step 5

Tighten the screw with a screwdriver

to secure the module into place.

NUT1NUT2D

Please do not overtighten the screw

as this might damage the module.

English

45

M.2_SSD (NGFF) Module Support List

Vendor Interface P/N

SanDisk PCIe SanDisk-SD6PP4M-128G( Gen2 x2)
Intel PCIe INTEL 6000P-SSDPEKKF256G7 (nvme)
Intel PCIe INTEL 6000P-SSDPEKKF512G7 (nvme)
Intel PCIe SSDPEKKF512G7 NVME / 512GB
Kingston PCIe Kingston SHPM2280P2 / 240G (Gen2 x4)
Samsung PCIe Samsung XP941-MZHPU512HCGL(Gen2x4)
Samsung PCIe SM951 (NVME) / 512GB
Samsung PCIe SM951 (MZHPV512HDGL) / 512GB
ADATA PCIe ASX8000NP-512GM-C / 512GB
ADATA PCIe ASX7000NP-512GT-C / 512GB
Kingston PCIe SKC1000/480G
Kingston PCIe SKC1000/960GB NVME
PLEXTOR PCIe PX-512M8PeG/ 512GB
WD PCIe WDS512G1X0C-00ENX0 (NVME) / 512GB

For the latest updates of M.2 _SSD (NFGG) module support list, please visit our website

for details: http://www.asrock.com

English

46

B550 Steel Legend

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_2)

The M.2, also known as the Next Generat ion Form Factor (NGFF), is a small size and

versatile card edge connector that aims to replace mPCIe and mSATA. e M.2 Socket

(M2_2) supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s modu le

and M.2 PCI Express module up to Gen3 x2 (16 Gb/s).

* M2_2 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be

disabled.

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_SSD (NGFF) module

and the screw.

5

4

3

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

2

1

A

BCDE

location to be used.

No. 1 2 3 4 5

Nut Location A B C D E

PCB Length 3cm 4.2cm 6cm 8cm 11cm

Module Type Type 2230 Type 2242 Type2260 Type 2280 Type 22110

English

47

Step 3

Before installing a M.2 (NGFF) SSD

module, please loosen the screws to

remove the M.2 heatsink.

*Please remove the protective lms

on the bottom side of the M.2

heatsink before you install a M.2

SSD module.

Step 4

Prepare the M.2 stando that comes

with the package. en hand tighten

the stando into the desired nut

ABCDE

location on the motherboard. Align

and gently insert the M.2 (NGFF)

SSD module into the M.2 slot. Please

be aware that the M.2 (NGFF) SSD

module only ts in one orientation.

o

ABCDE

20

English

48

Step 5

Tighten the screw with a screwdriver

to secure the module into place.

NUT1NUT2DE

Please do not overtighten the screw

as this might damage the module.

M.2_SSD (NGFF) Module Support List

Vendor Interface P/N

SanDisk PCIe SanDisk-SD6PP4M-128G( Gen2 x2)
Intel PCIe INTEL 6000P-SSDPEKKF256G7 (nvme)
Intel PCIe INTEL 6000P-SSDPEKKF512G7 (nvme)
Intel PCIe SSDPEKKF512G7 NVME / 512GB
Intel SATA 540S-SSDSCKKW240H6 / 240GB
Kingston PCIe Kingston SHPM2280P2 / 240G (Gen2 x4)
Samsung PCIe Samsung XP941-MZHPU512HCGL(Gen2x4)
Samsung PCIe SM951 (NVME) / 512GB
Samsung PCIe SM951 (MZHPV512HDGL) / 512GB
ADATA SATA ADATA - AXNS381E-128GM-B
ADATA PCIe ASX8000NP-512GM-C / 512GB
ADATA PCIe ASX7000NP-512GT-C / 512GB
ADATA SATA ASU800NS38-512GT-C / 512GB
Crucial SATA Crucial-CT240M500SSD4-240GB
ezlink SATA ezlink P51B-80-120GB
Intel SATA INTEL 540S-SSDSCKKW240H6-240GB
Kingston SATA Kingston SM2280S3G2/120G - Win8.1
Kingston SATA Kingston-RBU-SNS8400S3 / 180GD
Kingston PCIe SKC1000/480G
Kingston PCIe SKC1000/960GB NVME
LITEON SATA LITEON LJH-256V2G-256GB (2260)
PLEXTOR SATA PLEXTOR PX-128M6G-2260-128GB
PLEXTOR SATA PLEXTOR PX-128M7VG-128GB
PLEXTOR PCIe PX-512M8PeG/ 512GB
SanDisk SATA SanDisk X400-SD8SN8U-128G
SanDisk SATA Sandisk Z400s-SD8SNAT-128G-1122
SanDisk SATA SanDisk-SD6SN1M-128G
Transcend SATA Transcend TS256GMTS800-256GB
Transcend SATA TS512GMTS800 / 512GB
V-Color SATA V-Color 120G
V-Color SATA V-Color 240G
WD SATA WD GREEN WDS240G1G0B-00RC30
WD PCIe WDS512G1X0C-00ENX0 (NVME) / 512GB

B550 Steel Legend

For the latest updates of M.2 _SSD (NFGG) module support list, please visit our website

for details: http://www.asrock.com

English

49

Chapter 3 Software and Utilities Operation

3.1 Installing Drivers

e Support CD that comes with the motherboard contains necessary drivers and

useful utilities that enhance the motherboard’s features.

Running The Support CD

To begin using the support CD, insert the CD into your CD-ROM drive. e CD

automatically displays the Main Menu if “AUTORUN” is enabled in your computer.

If the Main Menu does not appear automatically, locate and double click on the le

“ASRSETUP.EXE” in the Support CD to display the menu.

Drivers Menu

e drivers compatible to your system will be auto-detected and listed on the

support CD driver page. Please click Install All or follow the order from top to

bottom to install those required drivers. erefore, the drivers you install can work

properly.

Utilities Menu

e Utilities Menu shows the application soware that the motherboard supports.

Click on a specic item then follow the installation wizard to insta ll it.

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3.2 ASRock Motherboard Utility (A-Tuning)

ASRock Motherboard Utilit y (A-Tuning) is ASRock’s multi purpose soware suite

with a new interface, more new features and improved utilities.

3.2.1 Installing ASRock Motherboard Utility (A-Tuning)

ASRock Motherboard Utilit y (A-Tuning) can be downloaded from ASRock Live

Update & APP Shop. Aer the installation, you will nd the icon “ASRock Mother-

board Utility (A-Tuning)“ on your desktop. Double-click the

“ASRock Motherboard Utility (A-Tuning)“ icon, ASRock Motherboard Utility

(A-Tuning) main menu will pop up.

3.2.2 Using ASRock Motherboard Utility (A-Tuning)

ere are ve sections in ASRock Motherboard Utility (A-Tuning) main menu:

Operation Mode, OC Tweaker, System Info, FAN-Tastic Tuning and Settings.

Operation Mode

Choose an operation mode for your computer.

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OC Tweaker

Congurations for overclocking the system.

System Info

View information about the system.

*e System Browser tab may not appear for certain models.

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FAN-Tastic Tuning

Congure up to ve dierent fan speeds using the graph. e fans will automatically shi

to the next speed level when the assigned temperature is met.

Settings

Congure ASRock ASRock Motherboard Utility (A-Tuning). Click to select "Auto

run at Windows Startup" if you want ASRock Motherboard Utility (A-Tuning) to

be launched when you start up the Windows operating system.

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3.3 ASRock Live Update & APP Shop

e ASRock Live Update & APP Shop is an online store for purchasing and

downloading soware applications for your ASRock computer. You can quick ly and

easily insta ll various apps and support utilities. With ASRock Live Update & APP

Shop, you can optimize your system and keep your motherboard up to date simply

with a few clicks.

Double-click on your desktop to access ASRock Live Update & APP Shop
utility.

*You need to be connected to the Internet to download apps f rom the ASRock Live Update & APP Shop.

3.3.1 UI Overview

Category Panel

Hot News

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Information Panel

Category Panel: e category panel contains several category tabs or buttons that

when selected the information panel below displays the relative information.

Information Panel: e information panel in the center displays data about the

currently selected category and allows users to perform job-related tasks.

Hot News: e hot news section displays the various latest news. Click on the image

to visit the website of the selected news and know more.

3.3.2 Apps

When the "Apps" tab is selected, you will see all the available apps on screen for you

to download.

Installing an App

Step 1

Find the app you want to install.

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e most recommended app appears on the le side of the screen. e other various

apps are shown on the right. Please scroll up and down to see more apps listed.

You can check the price of the app and whether you have already intalled it or not.

- e red icon displays the price or "Free" if the app is free of charge.

- e green "Installed" icon means the app is installed on your computer.

Step 2

Click on the app icon to see more details about the selected app.

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Step 3

If you want to install the app, click on the red icon to start downloading.

Step 4

When installation completes, you can nd the green "Installed " icon appears on the

upper right corner.

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To uninstall it, simply click on the trash can icon .
*e trash icon may not appear for certain apps.

Upgrading an App

You can only upgrade the apps you have already installed. When there is an

available new version for your app, you will nd the mark of "New Version"

appears below the installed app icon.

Step 1

Click on the app icon to see more details.

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Step 2

Click on the yellow icon to start upgrading.

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3.3.3 BIOS & Drivers

Installing BIOS or Drivers

When the "BIOS & Drivers" tab is selected, you will see a list of recommended or

critical updates for the BIOS or drivers. Please update them all soon.

Step 1

Please check the item information before update. Click on to see more details.

Step 2

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Click to select one or more items you want to update.

Step 3

Click Update to start the update process.

3.3.4 Setting

In the "Setting" page, you can change the language, select the server location, and

determine if you want to automatically run the ASRock Live Update & APP Shop

on Windows startup.

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3.4 Nahimic Audio

Nahimic audio soware provides an incredible high denition sound technology which

boosts the audio and voice performance of your system. Nahimic Audio interface is

composed of four tabs: Audio, Microphone, Sound Tracker and Settings.

ere are four functions in Nahimic audio :

No. Function Description

From this tab, you can mute the current audio device, choose

Audio

1

between four factory audio proles, turn all audio eects
on/o, restores the current prole to its default settings and
access Surround Sound and various features.

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Microphone

2

3

4

Sound

Tracker

Settings

From this tab, you can mute the current mic device, choose
between two factory mic proles, turn/o all microphone
eects, restore the current prole to its default settings, and
access Static Noise Suppression and various features.

e Sound Tracker provides a visual indication localizing
the sources of the sounds while in a game. ese are
represented by dynamic segments pointing the direction
of the sounds: the more opaque they are, the stronger the
sounds are.

From this tab, you can access all settings and information of
the soware.

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3.5 ASRock Polychrome SYNC

ASRock Polychrome SYNC is a lighting control utility specically designed for unique indi-

viduals with sophisticated tastes to build their own stylish colorful lighting system. Simply by

connecting the LED strip, you can customize various lighting schemes and patterns, including

Static, Breathing, Strobe, Cycling, Music, Wave and more.

Connecting the LED Strip

Connect your RGB LED strips to the

motherboard.

RGB LED Headers (RGB_LED1, RGB_LED2)

RGB_LED2

1

12V G R B

1

B

R

G

V

2

1

on the

RGB_LED1

1

12V G R B

1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, the cable
may be damaged.

2. Before installing or removing your RGB LED cable, pl ease power o your system
and unplug the powe r cord from the power supply. Failure to do so m ay cause dam­ages to motherboard components.

1. Please note that the RGB LED strips do not come with the package.

2. e RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a
maximum power rating of 3A (12V) and length within 2 meters.

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Connecting the Addressable RGB LED Strip

Connect your

ADDR_LED2)

Addressable RGB LED

strips to the

Addressable LED Headers (ADDR_LED1,

on the motherboard.

ADDR_LED2

1

1

1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, the cable
may be damaged.

2. Before installing or removing your RGB LED cable, pl ease power o your system
and unplug the powe r cord from the power supply. Failure to do so m ay cause dam­ages to motherboard components.

GND

GND

DO_ ADD R

DO_ ADD R

VOU T

VOU T

ADDR_LED1

1

DO_ ADD R

VOU T

GND

1

B

R

G

V
2

1

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1. Please note that the RGB LED strips do not come with the package.

2. e RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/
GND), with a ma ximum power rating of 3A (5V) and length w ithin 2 meters.

ASRock Polychrome SYNC Utility

Now you can adjust the RGB LED color through the ASRock Polychrome SYNC Utility.

Download this utility from the ASRock Live Update & APP Shop and start coloring your

PC style your way!

Drag the tab to customize your

preference.

Toggle on/o the

RGB LED switch

Sync RGB LED eects

for all LED regions of

the motherboard

Select a RGB LED light eect

from the drop-down menu.

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Chapter 4 UEFI SETUP UTILITY

4.1 Introduction

is section explains how to use the UEFI SETUP UTILITY to congure your

system. You may run the UEFI SETUP UTILITY by pressing <F2> or <Del> right

aer you power on the computer, other wise, the Power-On-Self-Test (POST) will

continue with its test routines. If you wish to enter the UEFI SETUP UTILITY aer

POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the

reset button on the system chassis. You may also restart by turning the system o

and then back on.

Becau se the UEFI soware is constantly being upd ated, the following UEFI setup
screens and de scriptions are for reference purpose only, and they may not exactly
match what you see on your scre en.

4.1.1 UEFI Menu Bar

e top of the screen has a menu bar with the following selections:

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Main

OC Tweaker

Advanced

Tool

H/W Monitor

Security

Boot

Exit

For setting system time/date information

For overclocking congurations

For advanced system congurations

Useful tools

Displays current hardware status

For security settings

For conguring boot settings and boot priority

Exit the current screen or the UEFI Setup Utility

4.1.2 Navigation Keys

Use < > key or < > key to choose among the selections on the menu bar, and

use < > key or < > key to move the cursor up or down to select items, then

press <Enter> to get into the sub screen. You can also use the mouse to click your

required item.

Please check the following table for the descriptions of each navigation key.

Navigation Key(s) Description

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+ / -

<Tab>

<PGUP>

<PGDN>

<HOME>

<END>

<F1>

<F7>

<F9>

<F10>

<F12>

<ESC>

To change option for the selected items

Switch to next function

Go to the previous page

Go to the next page

Go to the top of the screen

Go to the bottom of the screen

To display the General Help Screen

Discard changes and exit the SETUP UTILITY

Load optimal default values for all the settings

Save changes and exit the SETUP UTILITY

Print screen

Jump to the Exit Screen or exit the current screen

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4.2 Main Screen

When you enter the UEFI SETUP UTILITY, the Main screen will appear and

display the system overview.

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4.3 OC Tweaker Screen

In the OC Tweaker screen, you can set up overclocking features.

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Becau se the UEFI soware is constantly being upd ated, the following UEFI setup
screens and de scriptions are for reference purpose only, and they may not exactly
match what you see on your scre en.

Overclock Mode(Bus Speed)

Select the overclock mode. Warning! When overclocking also the PCIe, PCI, SATA and

USB busses will be overcloked which may cause instability or failure. Please install an

operating system and the drivers required before overclocking, or else your HDD's may be

undetectable. Overclocking is not supported if the monitor is connected via the onboard

D-Bus/VGA connector.

CPU Frequency and Voltage(VID) Change

If this item is set to [Manual], the multiplier and voltage will be set based on user

selection. Final result is depending on the CPU's capability.

CPU Core (Per CCX)

CPU Voltage

Species a custom CPU core voltage (mV), Should be combined with a custom CPU

core frequency. Power saving features for idle cores (e.g. cc6 sleep) remain active.

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CCD0

CCX0 Frequency (MHz)

Use this item to adjust CCX0 Frequency.

CCX1 Frequency (MHz)

Use this item to adjust CCX1 Frequency.

CCD1

CCX0 Frequency (MHz)

Use this item to adjust CCX0 Frequency.

CCX1 Frequency (MHz)

Use this item to adjust CCX1 Frequency.

SoC/Uncore OC Voltage(VID)

Specify the SoC/Uncore voltage (VDD_SOC) in mV to support memory and Innity Fabric

overclocking. VDD_SOC also determines the GPU voltage on processors with integrated

graphics. “SoC/Uncore OC Mode” needs to be enabled to force this voltage.

CLD0 VDDP Voltage Control

AMD Overclocking Setup VDDP is a voltage for the DDR4 bus signaling (PHY), and it is

derived from your DRAM Voltage (VDDIO_Mem). As a result, VDDP voltage in mV can

approach but not exceed your DRAM Voltage.

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CLD0 VDDG CCD Voltage Control

AMD Overclocking Setup VDDG CCD represents voltage for the data portion of the Innity

Fabric. It is derived from the CPU SoC/Uncore Voltage (VDD_SOC). VDDG can approach

but not exceed VDD_SOC.

CLD0 VDDG IOD Voltage Control

AMD Overclocking Setup VDDG IOD represents voltage for the data portion of the Innity

Fabric. It is derived from the CPU SoC/Uncore Voltage (VDD_SOC). VDDG can approach

but not exceed VDD_SOC.

DRAM Information

DRAM Frequency

If [Auto] is selected, the motherboard will detect the memory module(s) inserted and assign

the appropriate frequency automatically. Setting DRAM Frequency can adjust DRAM

Timing.

DRAM Voltage

Congure the voltage for the DRAM Voltage.

Innity Fabric Frequency and Dividers

AMD Overclocking Setup Set Innity Fabric frequency (FCLK). Auto: FCLK = MCLK.

Manual: FCLK must be less than or equal to MCLK for best performance in most cases.

Latency penalties are incurred if FCLK and MCLK are mismatched, but suciently high

MCLK can negate or overcome this penalty.

DRAM Timing Conguration

External Voltage Settings and Load-line Calibration

Voltage Mode

[OC]

If this option is selected, there is larger range voltage for overclocking.

[Normal]

If this option is selected, there is smaller range voltage for normal system.

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CPU Core/Cache Voltage

Input voltage for the processor by the external voltage refulator.

CPU Core/Cache Load-Line Calibration

CPU Core/Cache Load-Line Calibration helps prevent CPU voltage droop when the system

is under heavy loading.

CPU VDDCR_SOC Voltage

Congure the voltage for the VID-requested VDDCR_SOC supply level.

CPU VDDCR_SOC Load-Line Calibration

CPU VDDCR_SOC Load-Line Calibration helps prevent VDDCR_SOC voltage droop when

the system is under heavy loading.U

VPPM

Congure the voltage for the VPPM.

VTT_DDR Oset Voltage(mV)

Use this to select VTT_DDR Oset Voltage(mV). e default value is [Auto].

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CPU VDD 1.8 Voltage

Congure the voltage for the CPU VDD 1.8 PROM.

Save User Default

Type a prole name and press enter to save your settings as user default.

Load User Default

Load previously saved user defaults.

Save User UEFI Setup Prole to Disk

Save current UEFI settings as an user default prole to disk.

Load User UEFI Setup Prole to Disk

Load previously saved user defaults from the disk.

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4.4 Advanced Screen

In this section, you may set the congurations for the following items: CPU

Conguration, Onboard Devices Conguration, Storage Conguration, ACPI

Conguration, Trusted Computing , AMD PBS, AMD Overclocking and AMD

CBS.

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Setting wrong values in this sec tion may cause the system to malfunction.

UEFI Conguration

Active Page on Entry

Select the default page when entering the UEFI setup utility.

Full HD UEFI

When [Auto] is selected, the resolution will be set to 1920 x 1080 if the monitor

supports Full HD resolution. If the monitor does not support Full HD resolution,

then the resolution will be set to 1024 x 768. When [Disable] is selected, the

resolution will be set to 1024 x 768 directly.

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4.4.1 CPU Conguration

PSS Support

Use this to enable or disable the generation of ACPI_PPC, _PSS, and _PCT objects.

NX Mode

Use this to enable or disable NX mode.

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SVM Mode

When this is set to [Enabled], a VMM (Virtual Machine Architecture)can utilize the

additional hardware capabilities provided by AMD-V. e default value is [Enabled].

Coniguration options: [Enabled] and [Disabled].

SMT Mode

is item can be used to disable symmetric multithreading. To re-enable SMT, a

power cycle is needed aer selecting [Auto].

Warning: S3 is not supported on systems where SMT is disabled.

AMD fTPM Switch

Use this to enable or disable AMD CPU fTPM.

4.4.2 Onboard Devices Conguration

Turn On Onboard LED in S5

Turn on/o the LED in the ACPI S5 state.

SR-IOV Support

Enable/disable the SR-IOV (Single Root IO Virtualization Support) if the system

has SR-IOV capable PCIe devices.

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UMA Frame buer Size

is item allows you to set the size of the UMA frame buer.

(Only for processor with integrated graphics)

Gnb Hd Audio

Enable/disable onboard HD audio. Set to Auto to enable onboard HD audio and

automatically disable it when a sound card is installed.

Front Panel

Enable/disable front panel HD audio.

Restore on AC/Power Loss

Select the power state aer a power failure. If [Power O] is selected, the power will

remain o when the power recovers. If [Power On] is selected, the system will start

to boot up when the power recovers.

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WAN Radio

Congure the WiFi module's connectivity.

BT On/O

Enable/disable the bluetooth.

Onboard LAN

Enable or disable the onboard network interface controller.

PS2 Y-Cable

Enable the PS2 Y-Cable or set this option to Auto.

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4.4.3 Storage Conguration

SATA Mode

AHCI: Supports new features that improve performance.

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RAID: Combine multiple disk drives into a logical unit.

SATA Hot Plug

Enable/disable the SATA Hot Plug function.

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4.4.4 ACPI Conguration

Suspend to RAM

It is recommended to select auto for ACPI S3 power saving.

Deep Sleep

Congure deep sleep mode for power saving when the computer is shut down. We

recommend disabling Deep Sleep for better system compatibility and stability.

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PS/2 Keyboard S4/S5 Wakeup Support

Allow the system to be waked up by a PS/2 Keyboard in S4/S5.

PCIE Devices Power On

Allow the system to be waked up by a PCIE device and enable wake on LAN.

RTC Alarm Power On

Allow the system to be waked up by the rea l time clock alarm. Set it to By OS to let

it be handled by your operating system.

USB Power Delivery in Soft O State (S5)

If this option is enabled, the USB port will provide power to your devices even when

the system is in Power State S5.

4.4.5 Trusted Computing

Security Device Support

Enable or disable BIOS support for security device.

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4.4.6 AMD PBS

e AMD PBS menu accesses AMD specic features.

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4.4.7 AMD Overclocking

e AMD Overclocking menu accesses options for conguring CPU frequency and

voltage.

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4.4.8 AMD CBS

e AMD CBS menu accesses AMD specic features.

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4.5 Tools

Easy RAID Installer

Easy R AID Installer helps you to copy the R AID driver from the support CD to

your USB storage device. Aer copying the drivers please change the SATA mode to

RAID, then you can start installing the operating system in RAID mode.

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SSD Secure Erase Tool

All the SSD's listed that supports Secure Erase function.

NVME Sanitization Tool

Aer you Sanitize SSD, all user data will be permanently destroyed on the SSD and

cannot be recovered.

Instant Flash

Save UEFI les in your USB storage device and run Instant Flash to update your

UEFI.

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4.6 Hardware Health Event Monitoring Screen

is section allows you to monitor the status of the hardware on your system,

including the parameters of the CPU temperature, motherboard temperature, fan

speed and voltage.

CPU FAN1 Setting

Select a fan mode for CPU Fan 1, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

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CPU FAN1 Temp Source

Select a fan temperature source for CPU Fan 1.

FAN Conguration

CPU_FAN2/WP Switch

Select CPU Water Pump mode.

CPU Fan 2 Control Mode

Select PWM mode or DC mode for CPU Fan 2.

CPU Fan 2 Setting

Select a fan mode for CPU Fan 2, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

CPU Fan 2 Temp Source

Select a fan temperature source for CPU Fan 2.

CHA_FAN1/WP Switch

Select CHA_FAN1 or Water Pump mode.

Chassis Fan 1 Control Mode

Select PWM mode or DC mode for Chassis Fan 1.

Chassis Fan 1 Setting

Select a fan mode for Chassis Fan 1, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 1 Temp Source

Select a fan temperature source for Chassis Fan 1.

CHA_FAN2/WP Switch

Select CHA_FAN2 or Water Pump mode.

Chassis Fan 2 Control Mode

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Select PWM mode or DC mode for Chassis Fan 2.

Chassis Fan 2 Setting

Select a fan mode for Chassis Fan 2, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 2 Temp Source

Select a fan temperature source for Chassis Fan 2.

CHA_FAN3/WP Switch

Select CHA_FAN3 or Water Pump mode.

Chassis Fan 3 Control Mode

Select PWM mode or DC mode for Chassis Fan 3.

Chassis Fan 3 Setting

Select a fan mode for Chassis Fan 3, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

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Chassis Fan 3 Temp Source

Select a fan temperature source for Chassis Fan 3.

CHA_FAN4/WP Switch

Select CHA_FAN4 or Water Pump mode.

Chassis Fan 4 Control Mode

Select PWM mode or DC mode for Chassis Fan 4.

Chassis Fan 4 Setting

Select a fan mode for Chassis Fan 4, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 4 Temp Source

Select a fan temperature source for Chassis Fan 4.

CHA_FAN5/WP Switch

Select CHA_FAN5 or Water Pump mode.

Chassis Fan 5 Control Mode

Select PWM mode or DC mode for Chassis Fan 5.

Chassis Fan 5 Setting

Select a fan mode for Chassis Fan 5, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

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Chassis Fan 5 Temp Source

Select a fan temperature source for Chassis Fan 5.

Fan-Tastic

Select a fan mode for Fan, or choose Customize to set 5 CPU temperatures and assign a

respective fan speed for each temperature.

FanTuning

Detect the lowest fan speed in the system. Iy may ta ke 3-5 minutes to complete.

4.7 Security Screen

In this section you may set or change the supervisor/user password for the system.

You may also clear the user password.

Supervisor Password

Set or change the password for the administrator account. Only the administrator

has authority to change the settings in the UEFI Setup Utility. Leave it blank and

press enter to remove the password.

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User Password

Set or change the password for the user account. Users are unable to change the

settings in the UEFI Setup Utility. Leave it blank and press enter to remove the

password.

Secure Boot

Enable to support Secure Boot.

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4.8 Boot Screen

is section displays the available devices on your system for you to congure the

boot settings and the boot priority.

Boot From Onboard LAN

Allow the system to be waked up by the onboard LAN.

Setup Prompt Timeout

Congure the number of seconds to wait for the setup hot key.

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Fast Boot

Fast Boot minimizes your computer's boot time. In fast mode you may not boot

from an USB storage device.

CSM (Compatibility Support Module)

CSM

Enable to launch the Compatibility Support Module. Please do not disable unless

you’re running a WHCK test.

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Launch PXE OpROM Policy

Select UEFI only to run those that support UEFI option ROM only. Select Legacy

only to run those that support legacy option ROM only. Select Do not launch to not

execute both legacy and UEFI option ROM.

Launch Storage OpROM Policy

Select UEFI only to run those that support UEFI option ROM only. Select Legacy

only to run those that support legacy option ROM only. Select Do not launch to not

execute both legacy and UEFI option ROM.

Bootup Num-Lock

Select whether Num Lock should be turned on or o when the system boots up.

Full Screen Logo

Enable to display the boot logo or disable to show normal POST messages.

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AddOn ROM Display

Enable AddOn ROM Display to see the AddOn ROM messages or congure the AddOn

ROM if you've enabled Full Screen Logo. Disable for faster boot speed.

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4.9 Exit Screen

Save Changes and Exit

When you select this option the following message, “Save conguration changes

and exit setup?” will pop out. Select [OK] to save changes and exit the UEFI SETUP

UTILITY.

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Discard Changes and Exit

When you select this option the following message, “Discard changes and exit

setup?” will pop out. Select [OK] to exit the UEFI SETUP UTILITY without saving

any changes.

Discard Changes

When you select this option the following message, “Discard changes?” will pop

out. Select [OK] to discard all changes.

Load UEFI BIOS Defaults

Load UEFI BIOS Default values for all the setup questions. e F9 key can be used

for this operation.

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Contact Information

If you need to contact ASRock or want to know more about ASRock, you’re welcome

to visit ASRock’s website at http://ww w.asrock.com; or you may contact your dealer

for further information. For technical questions, please submit a support request

form at http://www.asrock.com/support/tsd.asp

ASRock Incorporation

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District,

Taipei City 112, Taiwan (R.O.C.)

ASRock EUROPE B.V.

Bijsterhuizen 11-11

6546 AR Nijmegen

e Netherlands

Phone: [phone]

Fax: [phone]

ASRock America, Inc.

13848 Magnolia Ave, Chino, CA91710

U.S.A.

Phone: [phone]

Fax: [phone]

DECLARATION OF CONFORMITY

Responsible Party Name:

Phone/Fax No:

hereby declares that the product

Product Name : Motherboard

Per FCC Part 2 Section 2.1077(a)

ASRock Incorporation

Address:

13848 Magnolia Ave, Chino, CA91710

[phone]/[phone]

Model Number :

Conforms to the following specications:

FCC Part 15, Subpart B, Unintentional Radiators

Supplementary Information:

B550 Steel Legend

is device complies with part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) is device may not cause harmful interference,

and (2) this device must accept any interference received, including interference

that may cause undesired operation.

James

Representative Person’s Name:

Signature :

Date :

May 12, 2017

EU Declaration of Conformity

EMC —Directive 2014/30/EU (from April 20th, 2016)

☐

For the following equipment:

Motherboard

(Product Name)

B550 Steel Legend / ASRock

(Model Designation / Trade Name)

ASRock Incorporation

(Manufacturer Name)

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District, Taipei City 112, Taiwan (R.O.C.)

(Manufacturer Address)

ڛ

☐ EN 55022:2010/AC:2011 Class B EN 55024:2010/A1:2015

ڛ EN 55032:2012+AC:2013 Class B ڛڛ EN 61000-3-3:2013
ڛ EN 61000-3-2:2014

☐

LVD —Directive 2014/35/EU (from April 20th, 2016)

EN 60950-1 : 2011+ A2: 2013 ☐

ڛ RoHS — Directive 2011/65/EU
ڛ CE marking

EN 60950-1 : 2006/A12: 2011

(EU conformity marking)

ASRock EUROPE B.V.

(Company Name)

Bijsterhuizen 1111 6546 AR Nijmegen e Netherlands

(Company Address)

Person responsible for making this declaration:

(Name, Surname)

A.V.P

(Position / Title)

June 5, 2020

(Date)

P/N: 15G062233000AK V1.0