ASRock B450 Steel Legend Service Manual

Version 1.0

Published January 2019

Copyright©2019 ASRock INC. All rights reser ved.

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 7

1.4 I/O Panel 9

Chapter 2 Installation 11

2.1 Installing the CPU 12

2.2 Installing the CPU Fan and Heatsink 14

2.3 Installing Memory Modules (DIMM) 22

2.4 Expansion Slots (PCI Express Slots) 25

2.5 Jumpers Setup 26

2.6 Onboard Headers and Connectors 27

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide 32

2.7.1 Installing Two CrossFireXTM-Ready Graphics Cards 32

2.7.2 Driver Installation and Setup 34

2.8 M.2_SSD (NGFF) Module Installation Guide (M2_1) 35

2.9 M.2_SSD (NGFF) Module Installation Guide (M2_2) 38

Chapter 3 Software and Utilities Operation 41

3.1 Installing Drivers 41

3.2 A-Tuning 42

3.2.1 Installing A-Tuning 42

3.2.2 Using A-Tuning 42

3.3 ASRock Live Update & APP Shop 45

3.3.1 UI Overview 45

3.3.2 Apps 46

3.3.3 BIOS & Drivers 49

3.3.4 Setting 50

3.4 ASRock Polychrome RGB 51

Chapter 4 UEFI SETUP UTILITY 54

4.1 Introduction 54

4.1.1 UEFI Menu Bar 54

4.1.2 Navigation Keys 55

4.2 Main Screen 56

4.3 OC Tweaker Screen 57

4.4 Advanced Screen 60

4.4.1 CPU Conguration 61

4.4.2 North Bridge Conguration 62

4.4.3 South Bridge Conguration 63

4.4.4 Storage Conguration 64

4.4.5 Super IO Conguration 65

4.4.6 ACPI Conguration 66

4.4.7 Trusted Computing 67

4.4.8 AMD CBS 68

4.4.9 AMD PBS 76

4.5 Tools 77

4.6 Hardware Health Event Monitoring Screen 79

4.7 Security Screen 82

4.8 Boot Screen 83

4.9 Exit Screen 85

B450 Steel Legend

Chapter 1 Introduction

ank you for purchasing ASRock B450 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 manual, 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 manual will be subject to change without notice. In ca se any modica­tions of this manual occur, the updated version will be available on ASRock’s website
without further notice. If you require technical suppor t related to this motherboard,
please visit our website for spe cic information about the model you are using. You
may nd the l atest VGA cards and CPU support list on ASRock ’s website a s well.
ASRock website http://www.a srock .com.

1.1 Package Contents

ASRock B450 Steel Legend Motherboard (ATX Form Factor)

•

ASRock B450 Steel Legend Quick Installation Guide

•

ASRock B450 Steel Legend Support CD

•

1 x I/O Panel Shield

•

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

•

2 x Screws for M.2 Sockets (Optional)

•

1 x Stando for M.2 Socket (Optional)

•

English

1

1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

•

•

•

•

•

•

•

•

* For Ryzen Series CPUs (Raven Ridge), ECC is only supported

with PRO CPUs.

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

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

* Please refer to page 22 for the table for AMD non-XMP mem-

ory frequency support. For more details, please refer to the QVL

on ASRock’s website.

•

•

ATX Form Factor

AMD AM4 Socket

Digi Power design

6 Power Phase design

Supports 105W Water Cooling (Pinnacle Ridge); Supports

95W Water Cooling (Summit Ridge); Supports 65W Water

Cooling (Raven Ridge)

AMD Promontory B450

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4

3533+(OC)/3200(OC)/2933(OC)/2667/2400/2133 ECC & non-

ECC, un-buered memory*

AMD Ryzen series CPUs (Summit Ridge) support DDR4

3466+(OC)/3200(OC)/2933(OC)/2667/2400/2133 ECC &

non-ECC, un-buered memory*

AMD Ryzen series CPUs (Raven Ridge) support DDR4

3466+(OC)/3200(OC)/2933/2667/2400/2133 non-ECC, un-

buered memory*

Max. capacity of system memory: 64GB

15μ Gold Contact in DIMM Slots

English

2

Expansion
Slot

AMD Ryzen series CPUs (Summit Ridge and Pinnacle Ridge)

2 x PCI Express 3.0 x16 Slots (PCIE1: x16 mode; PCIE4: x4

•

mode)*

AMD Ryzen series CPUs (Raven Ridge)

2 x PCI Express 3.0 x16 Slots (PCIE1: x8 mode; PCIE4: x4

•

mode)*

Graphics

B450 Steel Legend

AMD Athlon series CPUs

2 x PCI Express 3.0 x16 Slots (PCIE1: x4 mode; PCIE4: x2

•

mode)*

* Supports NVMe SSD as boot disks

* If M2_1 is occupied, PCIE4 will be disabled.

4 x PCI Express 2.0 x1 Slots

•

Supports AMD Quad CrossFireXTM and CrossFireXTM**

•

** is feature is only supported with Ryzen Series CPUs (Summit

Ridge, Pinnacle Ridge and Raven Ridge).

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 1.2

•

ports by independent display controllers

Supports HDMI 1.4 with max. resolution up to 4K x 2K

•

(4096x2160) @ 24Hz / (3840x2160) @ 30Hz

Supports DisplayPort 1.2 with max. resolution up to 4K x 2K

•

(4096x2160) @ 60Hz

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

•

HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant

HDMI monitor is required)

Supports HDCP 1.4 with HDMI 1.4 and DisplayPort 1.2 Ports

•

Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and

•

DisplayPort 1.2 Ports

Audio

7.1 CH HD Audio with Content Protection (Realtek ALC892

•

Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection

•

Nichicon Fine Gold Series Audio Caps

•

PCB Isolate Shielding

•

Individual PCB Layers for R/L Audio Channel

•

Gold Audio Jacks

•

English

3

LAN

Rear Panel
I/O

PCIE x1 Gigabit LAN 10/100/1000 Mb/s

•

Realtek RTL8111H

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.2

•

1 x Optica l SPDIF Out Port

•

2 x USB 2.0 Ports (Supports ESD Protection)

•

1 x USB 3.1 Gen2 Type-A Port (10 Gb/s) (Supports ESD Pro-

•

tection)

1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (Supports ESD Pro-

•

tection)

4 x USB 3.1 Gen1 Ports (Supports ESD Protection)

•

* Ultra USB Power is supported on USB3_34 ports.

* ACPI wake-up function is not supported on USB3_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)

English

4

Storage

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

•

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

2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, sup-

•

port NCQ, AHCI and Hot Plug

* M2_ 2, SATA3_3 and SATA3_4 share lanes. If either one of

them is in use, the others will be disabled.

1 x Ultra M.2 Socket (M2_1), supports M Key type

•

2230/2242/2260/2280 M.2 PCI Express module up to Gen3

x4 (32 Gb/s) (with Summit Ridge, Raven Ridge and Pin-

nacle Ridge) or Gen3 x2 (16 Gb/s) (with Athlon 2xxGE series

APU)**

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) **

** If M2_1 is occupied, PCIE4 will be disabled.

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

Connector

B450 Steel Legend

1 x COM Port Header

•

1 x TPM Header

•

1 x Power LED and Speaker Header

•

1 x RGB LED Header

•

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

1 x Addressable LED Header

•

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

1 x AMD Fan LED Header

•

* e AMD Fan LED Header supports LED strips of maximum

load of 3A (36W) and length up to 2.5M.

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)

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

maximum 2A (24W) fan power.

3 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.

* CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and

CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

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

•

Protection)

1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports)

•

(Supports ESD Protection)

BIOS
Feature

AMI UEFI Legal BIOS with multilingual GUI support

•

Supports “Plug and Play”

•

ACPI 5.1 compliance wake up events

•

Supports jumperfree

•

SMBIOS 2.3 support

•

DRAM Voltage multi-adjustment

•

English

5

Temperature Sensing: CPU, MB

Hardware
Monitor

•

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, Vcore

•

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 overclo cking, including adju st­ing the setting in the BIOS, applying Untied Ove rclocking Technology, or using third­party o verclocking tools. Overclocking may aect your system’s stability, or even c ause
damage to the components and dev ices of your system. It should be done at your own
risk and expense. We are not responsible for possible damage cau sed by overclocking.

•

FCC, CE

•

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

•

English

6

1.3 Motherboard Layout

ATXP WR 1

Sup er

I/O

CLRCMOS2

1

PCI E1

HD_AUDI O1

1

CPU_FAN2 /WP

RJ- 45 L AN

SOC KE T AM4

USB 3 .1 Ge n2

1

COM1

CMOS

Batt ery

ATX12V1

Ultr a M .2

PCIe Ge n3 x4

USB3_5 _6

1

CHA_FAN1/ WP

HDLED R ESET

PLED PWRBTN

PANEL1

1

RoH S

SPK_PLED 1

1

DDR4 _A1 (64 b it, 288- pin modu le)

DDR4 _A2 (64 b it, 288- pin modu le)

DDR4 _B1 (64 b it, 288- pin modu le)

DDR4 _B2 (64 b it, 288- pin modu le)

PCI E2

PCI E4

M2_1

AMD

Prom ont ory

B450

AMD_FAN_LED 1

1

1

USB_3_4

TPMS1

1

SATA3_1

21

20

B450

STEEL LE GE ND

USB 3.1 Ge n1
T:U SB3_3
B: USB3 _4

USB 3.1 Gen2
T:US B31_TA_ 1
B: USB31_ TC_1

HDM I1

USB 2. 0
T:U SB5
B: USB 6

PS2

Keyb oard /

Mous e

CPU_FAN1

CHA_FAN3 /WP

CHA_FAN2 /WP

1

USB_1_2

RGB_LED1

1

ADDR_LED1

1

24

23

DP1

USB 3.1 Ge n1
T:U SB3_1
B: USB3 _2

Top:

Central/Bass

Center :

REAR SPK

Top:

LINE IN

Center :

FRONT

Bottom :

Optica l

SPDIF

Bottom :

MIC I N

PCI E3

PCI E5

PCI E6

SATA3_2

SATA3_A1

SATA3_A2

SATA3_3

SATA3_4

M2_2

1

B450 Steel Legend

3

2

5

4

6

7

8

9

10

11

17

15

16

12

13

14

English

7

No. Description

1 ATX 12V Power Connector (ATX12V1)

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

3 AMD Fan LED Header (AMD_FAN_LED1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

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

6 CPU Fan Connector (CPU_FAN1)

7 ATX Power Connector (ATXPWR1)

8 USB 3.1 Gen1 Header (USB3_5_6)

9 SATA3 Connector (SATA3_1)

10 SATA3 Connector (SATA3_2)

11 SATA3 Connector (SATA3_A1)

12 SATA3 Connector (SATA3_A2)

13 SATA3 Connector (SATA3_3)

14 SATA3 Connector (SATA3_4)

15 System Panel Header (PANEL1)

16 Power LED and Speaker Header (SPK_PLED1)

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

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

19 Clear CMOS Jumper (CLRCMOS2)

20 Addressable LED Header (ADDR_LED1)

21 USB 2.0 Header (USB_3_4)

22 USB 2.0 Header (USB_1_2)

23 COM Port Header (COM1)

24 RGB LED Header (RGB_LED1)

25 TPM Header (TPMS1)

26 Front Panel Audio Header (HD_ AUDIO1)

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

English

8

1.4 I/O Panel

1

B450 Steel Legend

5

2

436

1315 14

No. Description No. Description

1 USB 2.0 Ports (USB_56) 9 USB 3.1 Gen2 Type-A Port (USB31_TA_1)

2 LAN RJ-45 Port* 10 USB 3.1 Gen2 Type-C Port (USB31_TC_1)

3 Central / Bass (Orange) 11 USB 3.1 Gen1 Ports (USB3_12)

4 Rear Speaker (Black) 12 USB 3.1 Gen1 Ports (USB3_34)***

5 Line In (Light Blue) 13 HDMI Port

6 Front Speaker (Lime)** 14 DisplayPort 1.2

7 Microphone (Pink) 15 PS/2 Mouse/Keyboard Port

8 Optica l SPDIF Out Port

12

11

10

789

English

9

* 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

Activity / Link LED Speed LED

Status Description Status Description

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

** 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.

English

10

Audio Output

Channels

Front Speaker

(No. 6)

Rear Speaker

(No. 4)

Central / Bass

(No. 3)

Line In

(No. 5)

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

*** Ultra USB Power is supported on USB3_ 34 ports. ACPI wak e-up function is not supported on USB3_ 34 ports.

B450 Steel Legend

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.

11

English

2.1 Installing the CPU

Unplug all power cables be fore installing the CPU.

1

English

12

2

B450 Steel Legend

3

13

English

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

English

14

2

B450 Steel Legend

3

4

4-pin FAN cable

1

N

FA

_
U

P

C

English

15

Installing the AM4 Box Cooler SR2

1

2

English

16

B450 Steel Legend

3

17

English

4

4-pin FAN cable

1

N
FA

_

U

P

C

5

4-pin FAN cable

English

18

RGB LED Cable

1

N

FA

CPU_

1

D

E

L

_

N

FA

_

D

AM

+12V

*e diagram shown here are for reference only. Please refer to page 31 for the orientation of

AMD Fan LED Header (AMD_FAN_LED1).

Installing the AM4 Box Cooler SR3

1

B450 Steel Legend

2

English

19

3

4

English

20

B450 Steel Legend

5

4-pin FAN cable

CPU_FAN1

6

1

N

FA

_

U

P

C

USB 2.0 Header

B

S
U

Please note that this connector is the interface to the LED control board on the SR3, it requires the AMD

utility "SR3 Settings Soware" to control the LED.

*e diagram shown here are for reference only. Please refer to page 28 for the orientation of USB Header.

21

English

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 (Pinnacle Ridge):

English

UDIMM Memory Slot

A1 A2 B1 B2

Frequency

(Mhz)

- SR - - 2933

- DR - - 2933

- SR - SR 2933

- DR - DR 2933

SR SR SR SR 2933

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2133-2400

22

Ryzen Series CPUs (Summit Ridge):

B450 Steel Legend

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 2667

- DR - - 2667

- SR - SR 2667

- DR - DR 2667

SR SR SR SR 2667

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2133-2400

Frequency

(Mhz)

Ryzen Series CPUs (Raven Ridge):

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 2933

- DR - - 2667

- SR - SR 2667

- DR - DR 2667

SR SR SR SR 2667

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2133-2400

Frequency

(Mhz)

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

English

23