Asrock B460M Pro4/ac User Manual

Version 1.0

Published June 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.

CE Warning

is device complies with directive 2014/53/EU issued by the Commision of the European
Community.

is equipment complies with EU radiation exposure limits set forth for an uncontrolled
environment.
is equipment should be installed and operated with minimum distance 20cm between
the radiator & your body.

Operations in the 5.15-5.35GHz band are restricted to indoor usage only.

Radio transmit power per transceiver ty pe

Function Frequency Maximum Output Power (EIRP)

2400-2483.5 MHz 18.5 + / -1.5 dbm

5150-5250 MHz 21.5 + / -1.5 dbm

WiFi

Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

5250-5350 MHz

5470-5725 MHz

18.5 + / -1.5 dbm (no TPC)

21.5 + / -1.5 dbm (TPC)

25.5 + / -1.5 dbm (no TPC)

28.5 + / -1.5 dbm (TPC)

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

1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antennas 10

Chapter 2 Installation 12

2.1 Installing the CPU 13

2.2 Installing the CPU Fan and Heatsink 16

2.3 Installing Memory Modules (DIMM) 17

2.4 Expansion Slots (PCI Express Slots) 19

2.5 Jumpers Setup 20

2.6 Onboard Headers and Connectors 21

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide 26

2.7.1 Installing Two CrossFireXTM-Ready Graphics Cards 26

2.7.2 Driver Installation and Setup 28

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

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

Chapter 3 Software and Utilities Operation 36

3.1 Installing Drivers 36

3.2 ASRock Motherboard Utility (A-Tuning) 37

3.3 ASRock Live Update & APP Shop 40

3.3.1 UI Overview 40

3.3.2 Apps 41

3.3.3 BIOS & Drivers 44

3.3.4 Setting 45

3.4 Nahimic Audio 46

3.5 ASRock Polychrome SYNC 47

Chapter 4 UEFI SETUP UTILITY 50

4.1 Introduction 50

4.2 EZ Mode 51

4.3 Advanced Mode 52

4.3.1 UEFI Menu Bar 52

4.3.2 Navigation Keys 53

4.4 Main Screen 54

4.5 OC Tweaker Screen 55

4.6 Advanced Screen 65

4.6.1 CPU Conguration 66

4.6.2 Chipset Conguration 68

4.6.3 Storage Conguration 71

4.6.4 Intel(R) Thunderbolt 72

4.6.5 Super IO Conguration 73

4.6.6 ACPI Conguration 74

4.6.7 USB Conguration 75

4.6.8 Trusted Computing 76

4.7 Tools 77

4.8 Hardware Health Event Monitoring Screen 79

4.9 Security Screen 82

4.10 Boot Screen 83

4.11 Exit Screen 86

B460M Pro4/ac

Chapter 1 Introduction

ank you for purchasing ASRock B460M Pro4/ac 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 http://www.asrock.com.

1.1 Package Contents

ASRock B460M Pro4/ac Motherboard (Micro ATX Form Factor)

•

ASRock B460M Pro4/ac Quick Installation Guide

•

ASRock B460M Pro4/ac Support CD

•

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

•

2 x ASRock WiFi 2.4/5 GHz Antennas (Optional)

•

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

•

1 x I/O Panel Shield

•

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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

Solid Capacitor design

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

Digi Power design

9 Power Phase design

Supports Intel® Turbo Boost Max 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

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Expansion
Slot

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) with the bundled WiFi-802.11ac

•

module

B460M Pro4/ac

Graphics

Audio

* 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

* 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

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

•

(4096x2160) @ 30Hz

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 Port

•

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

•

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

•

Nahimic Audio

•

LAN

Gigabit LAN 10/100/10 00 Mb/s

•

Giga PHY Intel® I219V

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

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Wireless
LAN

Rear Panel
I/O

Storage

Intel® 802.11ac WiFi Module

•

Supports IEEE 802.11a/b/g/n/ac

•

Supports Dual-Band (2.4/5 GHz)

•

Supports high speed wireless connections up to 433Mbps

•

Supports Bluetooth 4.2+ High speed class II

•

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

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

•

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

•

2 x USB 2.0 Ports (Supports ESD Protection)

•

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

•

LED)

HD Audio Jacks: Line in / Front Speaker / Microphone

•

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 type

•

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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Connector

B460M Pro4/ac

1 x SPI TPM Header

•

1 x Chassis Intrusion 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)

* 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

•

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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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 realize that the re is a certain r isk involved with overclo cking, 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)

•

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1.3 Motherboard Layout

Intel

B460

ATXP WR 1

HDLED RESET

PLED PWRBTN

PANEL1

1

RoHS

4

CPU_FAN1

5

1

PCIE1

1

SPK_CI1

1

11

CMOS

Battery

DDR4 _A2 (64 b it, 288 -pin mo dule)

DDR4 _A1 (64 b it, 288 -pin mo dule)

DDR4 _B2 (64 b it, 288 -pin mo dule)

DDR4 _B1 (64 b it, 288 -pin mo dule)

6

ATX12V1

SATA3_2

SATA3_3

USB3_5_ 6

10

CLRMOS1

1

1

HD_AUDIO1

M2_1

Top:
RJ-45

CHA_FAN1/WP

USB 3.2 Gen1

USB31_TC_1

PCIE3

8

9

3

CHA_FAN3/WP

USB5_6

1

24

26

PCIE2

28

1

USB 3.2 Gen1
T: USB3_4
B: USB3_3

M2_3

Top:

LINE I N

Cent er:

FRON T

Bott om:

MIC IN

USB2. 0

T: USB1

B: USB 2

PS2

Keybo ard

/Mous e

2

RGB_LED1

1

ADDR_LED1

7

1

SPI_TPM_J1

T B1

1

ADDR_LED2

1

RGB_LED2

1

CHA_FAN2/WP

23

25

22

USB3_4

CPU_FAN2/WP

13

SATA3_4

SATA3_5

12

SATA3_1

SATA3_0

M2_2

USB 3.2 Gen1
T:
B:

USB3_2
USB3_1

14

15

16

17

18

21

20

19

27

WiFi-802.11ac

Module

HDMI 1

B460M Pro4/ac

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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 RGB LED Header (RGB_LED1)

7 Addressable LED Header (ADDR_LED1)

8 ATX Power Connector (ATXPWR1)

9 USB 3.2 Gen1 Header (USB3_ 5_6)

10 SATA3 Connector (SATA3_2)

11 SATA3 Connector (SATA3_3)

12 SATA3 Connec tor (SATA 3_4)

13 SATA3 Connector (SATA3_5)

14 Chassis/Water Pump Fan Connector (CHA_FAN3/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_FAN2/WP)

24 underbolt AIC Connector (TB1)

25 RGB LED Header (RGB_LED2)

26 Addressable LED Header (ADDR_LED2)

27 Front Panel Audio Header (HD_AUDIO1)

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

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8

B460M Pro4/ac

1.4 I/O Panel

1 2

9

11

10

No. Description No. Description

1 USB 2.0 Ports (USB12) 7 USB 3.2 Gen1 Ports (USB3_1_2)

2 LAN RJ-45 Port* 8 USB 3.2 Gen1 Type-C Port (USB3_TC_1)

3 Line In (Light Blue)** 9 Antenna Ports

4 Front Speaker (Lime)** 10 HDMI Port

5 Microphone (Pink)** 11 PS/2 Mouse/Keyboard Port

6 USB 3.2 Gen1 Ports (USB3_3_4)

8

7

3

4

56

* ere are two LEDs on the 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 connection
On Link Green 1Gbps connection

** Function of the Audio Ports in 7.1-channel Conguration:

Port Function

Light Blue (Rear panel) Rear Speaker Out
Lime (Rear panel) Front Speaker Out
Pink (Rear panel) Central /Subwoofer Speaker Out
Lime (Front panel) Side Speaker Out

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1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antennas

WiFi-802.11ac + BT Module

is motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ac + BT v4.2 module

that oers support for WiFi 802.11 a/b/g/n/ac connectivity standards and Bluetooth

v4.2. WiFi + BT module is an easy-to-use wireless local area network (WLAN) adapter

to support WiFi + BT. Bluetooth v4.2 standard features Smart Ready technology that

adds a whole new class of functionality into the mobile devices. BT 4.2 also includes

Low Energy Technology and ensures extraordinary low power consumption for PCs.

* e transmission speed may vary according to the environment.

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WiFi Antennas Installation Guide

B460M Pro4/ac

Step 1

Prepare the WiFi 2.4/5 GHz Antennas that come

with the package.

Step 2

Connect the two WiFi 2.4/5 GHz Antennas to

the antenna connectors. Turn the antenna clock-

wise until it is securely connected.

Step 3

Set the WiFi 2.4/5 GHz Antenna as shown in the

illustration.

*You may need to adjust the direction of

the antenna for a stronger signal.

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11

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.

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2.1 Installing the CPU

1. Before you insert the 1200-Pin CPU into the socke t, please check if the PnP cap is on the
socket, if the CPU surface is unclean, or if there are any bent pins in the socket. 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.

1

B460M Pro4/ac

A

B

2

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13

3

5

4

English

14

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.

B460M Pro4/ac

15

English

2.2 Installing the CPU Fan and Heatsink

1 2

English

16

CPU_FAN

B460M Pro4/ac

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 in stall 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 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.

17

English

1

2

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18

3

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 hardware 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

B460M Pro4/ac

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 or CHA_ FAN3/WP) when
using multiple graphics cards.

x16 x4

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19

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

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20

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

2.6 Onboard Headers and Connectors

SPEAKER

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.

B460M Pro4/ac

System Panel Header

(9-pi n PANEL1)

(see p.7, No. 16)

PWRBTN (Power Switch):

Connec t to the power switch on the chassi 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. P ress the reset sw itch to restart
the computer if the compute r freezes and fails to perform a normal 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 switch , reset switch, power LED, hard dr ive activity LED, speak er 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

PLED+

PLED-

HDLED-

HDLED+

PWRBTN#

GND

GND

RESET#

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.

Chassis Intrusion and

Speaker Header

(7-pi n SPK _CI1)

(see p.7, No. 15)

DUMMY
+5V

1

SIGNAL

DUMMY

GND

DUMMY

Please connect the

chassis intrusion and the

chassis speaker to this

header.

English

21

Serial ATA3 Connectors

(SATA3_0:

see p.7, No. 17)

(SATA3_1:

see p.7, No. 18)

(SATA3_ 2:

see p.7, No. 10)

(SATA3_ 3:

see p.7, No. 11)

(SATA3_4:

see p.7, No. 12)

(SATA3_ 5:

see p.7, No. 13)

SATA3_2

SATA3_4

SATA3_1

SATA3_0

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.

English

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. 9)

Front Panel Audio Header

(9-pin HD_ AUDIO1)

(see p.7, No. 27)

USB_PWR

1

USB_PWR

IntA_PA_SSRX-

IntA_PA_SSRX+

IntA_PA_SSTX-

IntA_PA_SSTX+

IntA_PA_D-

IntA_PA_D+

GND

1

MIC2_L

P-

P+

P+

P-

Vbus

GND

GND

PRESENCE#

MIC_RET

OUT2_R

MIC2_R

GND

DUMMY

GND

VbusVbus

IntA_PB_SSRX-

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

IntA_PB_SSTX+

GND

IntA_PB_D-

IntA_PB_D+

Dummy

1

OUT_RET

OUT2_L

J_SENSE

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. Each USB

3.2 Gen1 header can

support two ports.

is header is for

connecting audio devices

to the front audio panel.

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