ASRock B460M Steel Legend Service 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 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 15

2.3 Installing Memory Modules (DIMM) 16

2.4 Expansion Slots (PCI Express Slots) 18

2.5 Jumpers Setup 19

2.6 Onboard Headers and Connectors 20

2.7 Post Status Checker 25

2.8 CrossFireXTM and Quad CrossFireXTM Operation Guide 26

2.8.1 Installing Two CrossFireXTM-Ready Graphics Cards 26

2.8.2 Driver Installation and Setup 28

2.9 M.2_SSD (NGFF) Module Installation Guide (M2_1) 29

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_2) 32

2.11 M.2 WiFi/BT Module Installation Guide (M2_3) 36

Chapter 3 Software and Utilities Operation 38

3.1 Installing Drivers 38

3.2 ASRock Motherboard Utility (A-Tuning) 39

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 39

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 39

3.3 ASRock Live Update & APP Shop 42

3.3.1 UI Overview 42

3.3.2 Apps 43

3.3.3 BIOS & Drivers 46

3.3.4 Setting 47

3.4 Nahimic Audio 48

3.5 ASRock Polychrome SYNC 49

Chapter 4 UEFI SETUP UTILITY 52

4.1 Introduction 52

4.2 EZ Mode 53

4.3 Advanced Mode 54

4.3.1 UEFI Menu Bar 54

4.3.2 Navigation Keys 55

4.4 Main Screen 56

4.5 OC Tweaker Screen 57

4.6 Advanced Screen 67

4.6.1 CPU Conguration 68

4.6.2 Chipset Conguration 70

4.6.3 Storage Conguration 73

4.6.4 Intel(R) Thunderbolt 74

4.6.5 Super IO Conguration 75

4.6.6 ACPI Conguration 76

4.6.7 USB Conguration 77

4.6.8 Trusted Computing 78

4.7 Tools 79

4.8 Hardware Health Event Monitoring Screen 81

4.9 Security Screen 85

4.10 Boot Screen 86

4.11 Exit Screen 89

B460M Steel Legend

Chapter 1 Introduction

ank you for purchasing ASRock B460M 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 upd ated version will be available on
ASRock’s website w ithout f urther notice. If you require technical support related 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 http://www.asrock.com.

1.1 Package Contents

ASRock B460M Steel Legend Motherboard (Micro ATX Form Factor)

•

ASRock B460M Steel Legend Quick Installation Guide

•

ASRock B460M Steel Legend Support CD

•

1 x I/O Panel Shield

•

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

•

3 x Screws for M.2 Sockets (Option al)

•

1 x Stando for M.2 Socket (Optional)

•

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1

1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

•

•

•

•

•

•

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

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

* CoreTM (i9/i7) support DDR4 up to 2933; CoreTM (i5/i3),

Pentium® and Celeron® support DDR4 up to 2666.

•

•

•

•

Micro ATX Form Factor

Suppor ts 10th Gen Intel® CoreTM Processors (Socket 1200)

Digi Power design

9 Power Phase design

Supports Intel® Turbo Boost Ma x 3.0 Technology

Intel® B460

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

Supports DDR4 2933/2800/2666/2400/2133 non-ECC, un-

buered memory

Supports ECC UDIMM memory modules (operate in non-

ECC mode)

Max. capacity of system memory: 128GB

Supports Intel® Extreme Memory Prole (XMP) 2.0

15μ Gold Contact in DIMM Slots

English

2

Expansion
Slot

Graphics

2 x PCI Express 3.0 x16 Slots (PCIE1/PCIE3: single at x16

•

(PCIE1); dual at x16 (PCIE1) / x4 (PCIE3))

* Supports NVMe SSD as boot disks

1 x PCI Express 3.0 x1 Slot

•

Supports AMD Quad CrossFireXTM and CrossFireXTM

•

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

•

Intel® UHD Graphics Built-in Visuals and the VGA outputs

•

can be supported only with processors which are GPU

integrated.

Hardware Accelerated Codecs: AVC/H.264, HEVC/H.265

•

8bit, HEVC/H.265 10bit, VP8, VP9 8bit, VP9 10bit, MPEG 2,

MJ PEG, VC-1

B460M Steel Legend

* VP9 10bit and VC-1 are for decode only.

* VP8 and VP9 encode are not supported by Windows OS.

Graphics, Media & Compute: Microso DirectX 12, OpenGL

•

4.5, Intel® Built In Visuals, Intel® Quick Sync Video, Hybrid /

Switchable Graphics, OpenCL 2.1

Display & Content Security: Rec. 2020 (Wide Color Gamut),

•

Microso PlayReady 3.0, Intel® SGX Content Protection,

UHD/HDR Blu-ray Disc

Dual graphics output: support HDMI and DisplayPort 1.4

•

ports by independent display controllers

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

•

(4096x2160) @ 30Hz

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

•

(4096x2304) @ 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 2.3 with HDMI 1.4 and DisplayPort 1.4

•

Ports

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

•

DisplayPort 1.4 Ports

Audio

LAN

7.1 CH HD Audio with Content Protection (Realtek

•

ALC1200 Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection

•

PCB Isolate Shielding

•

Individual PCB Layers for R/L Audio Channel

•

Gold Audio Jacks

•

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

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3

Rear Panel
I/O

Storage

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

1 x Antenna Bracket

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

1 x Optical SPDIF Out Port

•

2 x USB 2.0 Ports (Supports ESD Protection)

•

4 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection)

•

1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection)

•

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

•

LED)

HD Audio Jacks: Rear Speaker / Centra l / Bass / Line in /

•

Front Speaker / Microphone (Gold Audio Jacks)

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

•

RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology

17), NCQ, AHCI and Hot Plug*

* If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will

be disabled.

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

•

2242/2260/2280 M.2 PCI Express module up to Gen3 x4

(32 Gb/s)**

1 x Ultra M.2 Socket (M2_2), supports M Key ty pe

•

2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Ex-

press module up to Gen3 x4 (32 Gb/s)**

** Supports Intel® OptaneTM Tech nolo gy (M 2_ 1)

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

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4

Connector

B460M Steel Legend

1 x SPI TPM Header

•

1 x Chassis Intrusion and Speaker Header

•

1 x RGB LED Header

•

* Supports 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)

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

maximum 2A (24W) fan power.

4 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, CHA_

FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin

fan is in use.

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

•

Connec tor)

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

•

Connec tor)

1 x Front Panel Audio Connector

•

1 x underbolt AIC Connector (5-pin) (Supports ASRock

•

underbolt 3 AIC R2.0 Card only)

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)

BIOS
Feature

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

CPU Core/Cache, GT, DRAM, VPPM, PCH 1.05V, VCCST,

•

VCCSA Voltage Multi-adjustment

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5

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

Hardware
Monitor

•

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

CASE OPEN detection

•

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

•

VPPM, PCH, VCCSA, VCCST

Microso® Windows® 10 64-bit

OS

Certica­tions

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

Please realiz e that the re is a certain r isk involved with o verclocking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using
third-party overclocking tool s. Overclocking may aect your s ystem’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)

•

English

6

1.3 Motherboard Layout

ATXP WR 1

HDLED RESET

PLED PWRBTN

PANEL1

1

RoHS

4

CPU_FAN1

5

1

PCIE1

10

DDR 4_A2 (6 4 bit, 28 8-pin m odule )

DDR 4_A1 (6 4 bit, 28 8-pin m odule)

DDR 4_B2 (6 4 bit, 28 8-pin m odule )

DDR 4_B1 (6 4 bit, 28 8-pin m odule )

SATA3_2

SATA3_3

9

CLRMOS1

1

1

HD_AUDIO1

M2_1

Top:
RJ-45

CHA_FAN4
/WP

USB 3.2 Gen1

USB3_TC_1

PCIE3

7

8

3

USB5_6

1

27

PCIE2

USB 3.2 Gen1
T: USB3_4
B: USB3_3

M2_3

USB2. 0

T: USB1

B: USB 2

PS2

Keyb oard

/Mou se

2

1

ADDR_LED 1

6

1

SPI_TPM_J1

T B1

1

ADDR_LED2

1

RGB_LED1

1

CHA_FAN2
/WP

24

26

22

USB3_4

CPU_FAN2/WP

12

SATA3_4

SATA3_5

11

M2_2

USB 3.2 Gen1
T:

USB3_2

B:

USB3_1

13

14

15

16

18

21

20

17

28

CMOS

Battery

SPK_CI1

1

SATA3_0

SATA3_1

Intel

B460

1

USB3_5 _6

B4 60 M Ste el L eg en d

ATX12V1

Ultra M.2

PCIe Gen3x4

CHA_FAN3
/WP

19

BIOS
ROM

25

CHA_FAN1
/WP

23

DP1

HDMI 1

Top:

Central/Bass

Cente r:

REAR SP K

Top:

LINE IN

Cente r:

FRONT

Botto m:

Optic al

SPDIF

Botto m:

MIC IN

LAN

AUDIO
CODEC

B460M Steel Legend

English

7

No. Description

1 ATX 12V Power Connector (ATX12V1)

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

3 CPU Fan Connector (CPU_FAN1)

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

5 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

6 Addressable LED Header (ADDR_LED1)

7 ATX Power Connector (ATXPWR1)

8 USB 3.2 Gen1 Header (USB3_ 5_6)

9 SATA3 Connector (SATA3_2)

10 SATA3 Connector (SATA3_3)

11 SATA3 Con ne ctor (SATA3_4)

12 SATA3 Connector (SATA3_5)

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

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

15 Chassis Intrusion and Speaker Header (SPK_CI1)

16 System Panel Header (PANEL1)

17 SATA3 Connector (SATA3_0)

18 SATA3 Connector (SATA3_1)

19 SPI TPM Header (SPI_TPM_J1)

20 USB 2.0 Header (USB5_6)

21 USB 2.0 Header (USB3_4)

22 Clear CMOS Jumper (CLRMOS1)

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

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

25 underbolt AIC Connector (TB1)

26 RGB LED Header (RGB_LED1)

27 Addressable LED Header (ADDR_LED2)

28 Front Panel Audio Header (HD_AUDIO1)

English

8

B460M Steel Legend

1.4 I/O Panel

1 2

12

15 913

No. Description No. Description

1 USB 2.0 Ports (USB12) 9 USB 3.2 Gen1 Ports (USB3_3_4)

2 2.5G LAN RJ-45 Port* 10 USB 3.2 Gen1 Ports (USB3_1_2)

3 Central / Bass (Orange) 11 USB 3.2 Gen1 Type-C Port (USB3_TC_1)

4 Rear Speaker (Black) 12 Antenna Bracket

5 Line In (Light Blue) 13 DisplayPort 1.4

6 Front Speaker (Lime)** 14 HDMI Port

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

8 Optical SPDIF Out Port

14

11

10

436

5

78

English

9

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

ACT/LINK LED

SPEED LED

LAN Por t

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

** If you use a 2- channel speaker, plea se connect the speake r’s plug into “Front Spea ker Jack”. See the table below

for connection d etails in accordance w ith the type of speaker you use.

English

Audio Output

Channels

Front Speaker

(No. 6)

Rear Speaker

(No. 4)

Central / Bass

(No. 3)

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

Line In

(No. 5)

10

B460M Steel Legend

Chapter 2 Installation

is is a Micro 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

•

components. Failure to do so may cause physical injuries 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

1

1. Before you insert the 1200-Pin CPU into the socke t, please check if the Pn P cap is on the
socket, if the CPU surface is unclean, or if there are any bent pins in the sock et. Do not
force to in sert the CPU into the socket if above situation is found . Otherwise, the CPU
will be seriously damaged.

2. Unplug all power c ables before in stalling the CPU.

English

A

B

2

12

B460M Steel Legend

3

5

4

13

English

Please save and replace the cover if the processor i s removed. e cover must be placed if
you wish to return the motherboard for aer service.

English

14

2.2 Installing the CPU Fan and Heatsink

1 2

B460M Steel Legend

CPU_FAN

English

15

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 channe l conguration, you always need to install identical (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

memory 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.

Dual Channel Memory Conguration

Priority DDR4_A1 DDR4_A2 DDR4_B1 DDR4_B2

1 Populated Populated
2 Populated Populated Populated Populated

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

English

16

B460M Steel Legend

1

2

3

English

17

2.4 Expansion Slots (PCI Express Slots)

ere are 3 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 h ardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 3.0 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.

PCIe Slot Congurations

PCIE1 PCIE3

Single Graphics Card x16 N /A

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18

Two Graphics Cards in

CrossFireXTM Mode

For a better ther mal environme nt, ple ase connect a ch assis fan to the motherboard’s
chassis fan connector (CHA_ FAN1/WP, CHA_ FAN2/WP, CHA_FAN3/WP or
CHA_ FAN4/WP) when using multiple graphics cards.

x16 x4

B460M Steel Legend

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

“O pen”.

Clear CMOS Jumper

(CLRMO S1)

(see p.7, No. 22)

CLRMOS1 allows you to clear the data in CMOS. To clear and reset the system

parameters to default setup, please turn o the computer and unplug the power

cord from the power supply. Aer waiting for 15 seconds, use a jumper cap to

short the pins on CLR MOS1 for 5 seconds. However, please do not clear the

CMOS right aer you update the BIOS. 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. Please be noted that the password,

date, time, and user default prole will be cleared only if the CMOS battery is

removed. Please remember toremove the jumper cap aer clearing the CMOS.

2-pin Jumper

If you clear the CMOS, the case open may be detec ted. Please a djust the BIOS option
“Clear Status” to clear the record of previou s chassis int rusion status.

English

19

2.6 Onboard Headers and Connectors

1

+5V

DUMMY

SIGNAL

GND

DUMMY

SPEAKER

DUMMY

1

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

System Panel Header

(9-pi n PANEL1)

(see p.7, No. 16)

PWRBTN (Power Switch):

Connec t to the power switch on the ch assi s front panel. You may congure the way to
turn o your system using the power switch.

RESET (Reset Switch):
Connec t to the reset switch on the chassi s front panel. Press the reset sw itch to restart
the computer if the compute r freezes and fails to perform a norm al restart.

PLED (Syste m Power LED):
Connec t to the power status indicator on the chas sis 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 panel module mainly consists
of power s witch , reset switch, power LED, hard dr ive activity LED, speak er and etc.
When connect ing your chassis front panel module to this head er, make sure the wire
assig nments and the pin assig nments are matched correctly.

PLED+

PLED-

HDLED-

HDLED+

PWRBTN#

GND

RESET#

GND

GND

Connect the power

switch, reset switch 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

20

Chassis Intrusion and

Speaker Header

(7-pi n SPK _CI1)

(see p.7, No. 15)

Please connect the

chassis intrusion and the

chassis speaker to this

header.

B460M Steel Legend

DUMMY

GND

GND

P+

P-

USB_PWR

P+

P-

USB_PWR

1

J_SENSE

OUT2_L

1

MIC_RET

PRESENCE#

GND

OUT2_R

MIC2_R

MIC2_L

OUT_RET

Serial ATA3 Connectors

(SATA3_0:

see p.7, No. 17)

(SATA3_1:

see p.7, No. 18)

(SATA3_ 2:

see p.7, No. 9)

(SATA3_ 3:

see p.7, No. 10)

(SATA3_4:

see p.7, No. 11)

(SATA3_ 5:

see p.7, No. 12)

USB 2.0 Headers

(9-pin USB3_4)

(see p.7, No. 21)

(9-pin USB5_6)

(see p.7, No. 20)

USB 3.2 Gen1 Header

(19-pin USB3_5_6)

(see p.7, No. 8)

IntA_PA_SSRX-

IntA_PA_SSRX+

IntA_PA_SSTX-

IntA_PA_SSTX+

IntA_PA_D-

IntA_PA_D+

SATA3_2

SATA3_4

Vbus

GND

GND

SATA3_1

SATA3_0

VbusVbus

IntA_PB_SSRX-

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

IntA_PB_SSTX+

GND

IntA_PB_D-

IntA_PB_D+

Dummy

1

ese six SATA3

connectors support SATA

SATA3_3

data cables for internal

storage devices with up to

6.0 Gb/s data transfer rate.

SATA3_5

If M2_2 is occupied by a

SATA-type M.2 device,

SATA3_0 will be disabled.

ere are two USB

2.0 headers on this

motherboard.Each USB

2.0 header can support

two ports.

ere is one USB 3.2

Gen1 header on this

motherboard. is USB

3.2 Gen1 header can

support two ports.

Front Panel Audio Header

(9-pin HD_ AUDIO1)

(see p.7, No. 28)

is header is for

connecting audio devices

to the front audio panel.

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21

1. High De nition Audio supports Jack Sen sing, but the panel wire on the chassis

GND

1

GND

4 3 2 1

FAN_SPEED_CONTROL

1 2 3 4

FAN_SPEED_CONTROL

1 2 3 4

must support HDA to function cor rectly. Please follow the instr uctions in our
manual and chassis manual to in stall your system.

2. If you use an AC’97 audio panel , please inst all it to the front panel audio header 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 ne ed 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 adjust “Recording Volume”.

English

Chassis/Water Pump Fan

Connectors

(4-pin CHA_FAN1/WP)

(see p.7, No. 23)

(4-pin CHA_FAN2/WP)

(see p.7, No. 24)

(4-pin CHA_FAN3/WP)

(see p.7, No. 13)

(4-pin CHA_FAN4/WP)

(see p.7, No. 14)

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.7, No. 3)

CPU/Water Pump Fan

Connector

(4-pin CPU_FAN2/WP)

(see p.7, No. 2)

FAN_SPEED_CONTROL

CHA_FAN_SPEED

FAN_VOLTAGE

FAN_VOLTAGE

2

CHA_FAN_SPEED

3

FAN_SPEED_CONTROL

4

CPU_FAN_SPEED

FAN_VOLTAGE

GND

CPU_FAN_SPEED

FAN_VOLTAGE

GND

is motherboard

provides four 4-Pin water

cooling

chassis

fan

connectors. If you plan to

connect a 3-Pin

chassis

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.

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.

22

B460M Steel Legend

4

1

8 5

1

1

SPI_DQ3

#

ATX Power Connector

(24-p i n ATX PWR1)

(see p.7, No. 7)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.7, No. 1)

SPI TPM Header

(13 -pi n SPI_T PM _J1)

(see p.7, No. 19)

12

1

+3.3V

SPI_CS0

SPI_DQ2

Dummy

CLK

RSMRST#

SPI_MISO

24

13

SPI_MOSI

RST#

SPI_TPM_CS

GND

TPM_PIRQ

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.

is motherboard pro-

vides a 8-pin ATX 12V

power connector. To use a

4-pin ATX power supply,

please plug it along Pin 1

and Pin 5.

is connector supports SPI

Trusted Platform Module (TPM)

system, which can securely

store keys, digital certicates,

passwords, and data. A TPM

system also helps enhance

network securit y, protects digital

identities, and ensures platform

integrity.

underbolt AIC

Connector

(5-pin TB1)

(see p.7, No. 25)

Please connect a underbolt™

add-in card (AIC) to this

connector via the GPIO cable.

*Please install the underbolt™

AIC card to PCIE3 (default slot).

English

23

RGB LED Header

1

DO_ADDR

D

1

(4-p i n RGB_LED1)

(see p.7, No. 26)

12V GRB

RGB LED header is used to

connect RGB LED extension

cables which allow users to

choose from various LED light-

ing eects.

Caution: Never install the RGB

LED cable in the wrong orienta-

tion; otherwise, the cable may

be damaged.

*Please refer to page 49 for for

further instructions on this

header.

English

Addressable LED Header

(3-pin A DDR_LE D1)

(see p.7, No. 6)

(3-pin A DDR_LE D2)

(see p.7, No. 27)

1

VOUT

GND

VOUT

DO_ADDR

e headers are used to connect

Addressable

LED extension ca-

bles which allow users to choose

from various LED lighting

eects.

Caution: Never install the

GN

Addressable LED cable in the

wrong orientation; otherwise,

the cable may be damaged.

*Please refer to page 50 for

further instructions on this

header.

24