Asrock B660M Pro RS/AX User Manual

Version 1.0

Published April 2022

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Specications and information contained in this documentation are furnished for
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is device complies with Part 15 of the FCC Rules. Operation is subject to the following
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(1) this device may not cause harmful interference, and
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is equipment has been tested and found to comply with the limits for a Class B digital
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- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

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IMPORTANT - READ BEFORE COPYING, INSTALLING OR USING.

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Licensee’s specic rights may vary from countr y to country.

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”

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

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ASRock INC. hereby declares that this device is in compliance with the essential require-

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ASRock INC. hereby declares that this device is in compliance with the essential require-

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conformity is available at: http://www.asrock.com

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Please refer to https://www.asrock.com/general/about.asp?cat=Responsibility for informa-

tion disclosure based on regulation requirements ASRock is complied with:

DO NOT throw the motherboard in municipa l waste. is product has been
designed to enable proper reuse of parts and recycling. is symbol of the
crossed out wheeled bin indicates that the product (electrical and electronic
equipment) should not be placed in municipal waste. Check local regulations
for disposal of electronic products.

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 type

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 6

1.4 I/O Panel 8

1.5 802.11ax Wi-Fi 6E Module and ASRock WiFi 2.4/5/6 GHz

Antennas 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 (PCIe Slots) 18

2.5 Jumpers Setup 19

2.6 Onboard Headers and Connectors 20

2.7 Post Status Checker 25

2.8 CrossFireTM Operation Guide 26

2.8.1 Installing Two CrossFireTM-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

Chapter 3 Software and Utilities Operation 35

3.1 Installing Drivers 35

3.2 ASRock Motherboard Utility (A-Tuning) 36

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 36

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 36

3.3 ASRock Live Update & APP Shop 39

3.3.1 UI Overview 39

3.3.2 Apps 40

3.3.3 BIOS & Drivers 43

3.3.4 Setting 44

3.4 Nahimic Audio 45

3.5 ASRock Polychrome SYNC 46

Chapter 4 UEFI SETUP UTILITY 49

4.1 Introduction 49

4.2 EZ Mode 50

4.3 Advanced Mode 51

4.3.1 UEFI Menu Bar 51

4.3.2 Navigation Keys 52

4.4 Main Screen 53

4.5 OC Tweaker Screen 54

4.6 Advanced Screen 68

4.6.1 CPU Conguration 69

4.6.2 Chipset Conguration 71

4.6.3 Storage Conguration 74

4.6.4 Intel® Thunderbolt 75

4.6.5 Super IO Conguration 76

4.6.6 ACPI Conguration 77

4.6.7 USB Conguration 78

4.6.8 Trusted Computing 79

4.7 Tools 81

4.8 Hardware Health Event Monitoring Screen 83

4.9 Security Screen 86

4.10 Boot Screen 87

4.11 Exit Screen 90

B660M Pro RS/AX

Chapter 1 Introduction

ank you for purchasing ASRock B660M Pro RS/AX 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 th e BIOS soware might be updated, the
content of this documentation will be subject to change without notice. In ca se any
modications of this documentation oc cur, the upd ated version will be avail able on
ASRock’s website w ithout furthe r notice. If you require technical support related to
this motherboard, please vi sit our website for s pecic inform ation 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 B660M Pro RS/AX Motherboard (Micro ATX Form Factor)

•

ASRock B660M Pro RS/AX Quick Installation Guide

•

ASRock B660M Pro RS/AX Support CD

•

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

•

2 x ASRock WiFi 2.4/5/6 GHz Antennas (Optional)

•

2 x Screws for M.2 Sockets (Optional)

•

1 x Stando for M.2 Socket (Optional)

•

1 x I/O Panel Shield

•

English

1

1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

•

•

•

•

•

•

•

•

* Supports DDR4 3200 natively.

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

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

•

•

•

Micro ATX Form Factor

Solid Capacitor design

Supports 12th Gen Intel® CoreTM Processors (LGA1700)

Digi Power design

8 Power Phase design

Supports Intel® Hybrid Technolog y

Supports Intel® Turbo Boost Ma x 3.0 Technology

Intel® B660

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

Supports DDR4 non-ECC, un-buered memory up to

5333+(OC)*

Supports ECC UDIMM memory modules (operate in non-

ECC mode)

Max. capacity of system memory: 128GB

Supports Intel® Extreme Memory Prole (X MP) 2.0

English

2

Expansion
Slot

Graphics

Chipset:

1 x PCIe 4.0 x16 Slot (PCIE1), supports x16 mode*

•

1 x PCIe 3.0 x16 Slot (PCIE3), supports x4 mode*

•

1 x PCIe 3.0 x1 Slot (PCIE2)*

•

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

•

WiFi module and Intel® CNVi (Integrated WiFi/BT)

* Supports NVMe SSD as boot disks

Supports AMD CrossFireTM

•

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

•

can be supported only with processors which are GPU

integrated.

Intel® Xe Graphics Architecture (Gen 12)

•

Dual graphics output: support HDMI and DisplayPort 1.4

•

ports by independent display controllers

Audio

LAN

Wireless

LAN

B660M Pro RS/AX

Supports HDMI 2.1 TMDS Compatible with max. resolution

•

up to 4K x 2K (4096x2160) @ 60Hz

Supports DisplayPort 1.4 with DSC (compressed) max.

•

resolution up to 8K (7680x4320) @ 60Hz / 5K (5120x3200) @

120Hz

Supports HDCP 2.3 with HDMI 2.1 TMDS Compatible and

•

DisplayPort 1.4 Ports

7.1 CH HD Audio (Realtek ALC897 Audio Codec)

•

Supports Surge Protection

•

Nahimic Audio

•

Gigabit LAN 10/100/1000 Mb/s

•

Giga PHY Intel® I219V

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports UEFI PXE

•

802.11ax Wi-Fi 6E Module

•

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

•

Supports Dual-Band 2x2 160MHz with extended 6GHz

•

band* support

* Wi-Fi 6E (6GHz band) will be supported by Microso®

Windows® 11. e availability will depend on the dierent

regulation status of each country and region. It will be activated

(for supported countries) through Windows Update and

soware updates once available.

* A 6GHz compatible router is required for 6E functionality.

2 antennas to support 2 (Transmit) x 2 (Receive) diversity

•

technolog y

Supports Bluetooth + High speed class II

•

Supports MU-MIMO

•

Rear Panel

I/O

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (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)

English

3

HD Audio Jacks: Line in / Front Speaker / Microphone

•

English

Storage

RAID

Connector

CPU:

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

•

2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*

Chipset:

1 x Ultra M.2 Socket (M2_2, Key M), supports type 2280

•

SATA3 6.0 Gb/s & PCIe Gen3x4 (32 Gb/s) modes*

4 x SATA3 6.0 Gb/s Connectors**

•

* Supports Intel® OptaneTM Technology (M2 _2 only)

* Supports Intel® Volume Management Device (VMD)

* Supports NVMe SSD as boot disks

* Supports ASRock U.2 Kit

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

will be disabled.

Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA

•

storage devices

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

3 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 maximum

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_FAN1~3/WP can auto detect if 3-pin

or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

4

BIOS

Feature

Hardware

Monitor

B660M Pro RS/AX

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 4 AIC Card)

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)

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

CPU Core/Cache, CPU GT, DRAM, VDD_IMC, VCCIN

•

AUX, +1.05V PROC, +0.82V PCH , +1.05V PCH Voltage

Multi-adjustment

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: CPU Vcore, +1.05V_PCH, DRAM, VC-

•

CIN AUX, +1.05V PROC, VCCSA, +0.82V PCH, +12V, +5V,

+3.3V

Microso® Windows® 10 64-bit / 11 64-bit

OS

Certica-

tions

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

Please realize that the re is a certain risk involved with overclocking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using
third-party overclocking tool s. Overclocking may aect your system’s stability, or
even cause dam age to the components and device s 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

5

1.3 Motherboard Layout

Intel

B660

ATXP WR 1

HDLED RESET

PLED PWRBTN

PANEL1

1

1

1

2

CPU_FAN1

3

1

PCIE1

1

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

USB3_5_ 6

CLRMOS1

1

1

HD_AUDIO1

Top:
RJ-45

CHA_FAN1/WP

PCIE3

8

9

4

USB_5_6

1

23

PCIE2

28

USB 3.2 Gen1
T: USB3_4
B: USB3_3

Top:

LINE I N

Cent er:

FRON T

Bott om:

MIC IN

USB2. 0

T: USB_1

B: USB _2

PS2

Keybo ard

/Mous e

1

ADDR_LED3

7

1

SPI_TPM_J1

T B1

1

ADDR_LED1

1

RGB_LED1

1

CHA_FAN3/WP

22

26

USB_3_4

CPU_FAN2/WP

11

12

SATA3_0

M2_2

USB 3.2 Gen1
T:

USB3_2

B:

USB3_1

13

14

19

18

16

27

M2_1

CMOS

Battery

5

SATA3_2

SATA3_3

F_USB 3_T C_1

10

SATA3_1

15

BIOS

ROM

24

CHA_FAN2/WP

21

SPK_CI1

1

20

HDMI 1

LAN

AUDIO
CODEC

DRAM

CPU

VGA

BOOT

1

ADDR_LED2

17

DP1

25

M2_W IFI1

WiFi-802.11ax

Module

English

6

No. Description

1 ATX 12V Power Connector (ATX12V1)

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

3 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

4 CPU Fan Connector (CPU_FAN1)

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

6 Addressable LED Header (ADDR_LED2)

7 Addressable LED Header (ADDR_LED3)

8 ATX Power Connector (ATXPWR1)

9 USB 3.2 Gen1 Header (USB3_ 5_6)

10 Front Panel Type C USB 3.2 Gen1 Header (F_USB3_TC_1)

11 SATA3 Connector (SATA3_3)(Lower)

12 SATA3 Connector (SATA3_2)(Upper)

13 System Panel Header (PANEL1)

14 SATA3 Connector (SATA3_0)

15 SATA3 Connector (SATA3_1)

16 SPI TPM Header (SPI_TPM_J1)

17 Post Status Checker (PSC)

18 USB 2.0 Header (USB_5_6)

19 USB 2.0 Header (USB_3_4)

20 Chassis Intrusion and Speaker Header (SPK_CI1)

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

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

23 5-pin underbolt AIC Connector (TB1)

24 Clear CMOS Jumper (CLRMOS1)

25 Addressable LED Header (ADDR_LED1)

26 RGB LED Header (RGB_LED1)

27 Front Panel Audio Header (HD_AUDIO1)

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

B660M Pro RS/AX

English

7

1.4 I/O Panel

1

3

42

11

10

78

No. Description No. Description

1 USB 2.0 Ports (USB_12) 7 USB 3.2 Gen1 Ports (USB3_1_2)

2 LAN RJ-45 Port* 8 Antenna Ports

3 Line In (Light Blue)** 9 DisplayPort 1.4

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)

* ere are two LEDs on the LAN port. Please refer to the table bel ow for the LAN por t 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:

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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

B660M Pro RS/AX

1.5 802.11ax Wi-Fi 6E Module and ASRock WiFi 2.4/5/6 GHz
Antennas

802.11ax Wi-Fi 6E + BT Module

is motherboard comes with an exclusive 802.11 a/b/g/n/ax Wi-Fi 6E + BT module

that oers support for 802.11 a/b/g/n/ax Wi-Fi 6E connectivity standards and

Bluetooth. Wi-Fi 6E + BT module is an easy-to-use wireless local area network

(WLAN) adapter to support Wi-Fi 6E + BT. Bluetooth standard features Smart

Ready technology that adds a whole new class of functionality into the mobile

devices. BT also includes Low Energy Technology and ensures extraordinary low

power consumption for PCs.

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

* Wi-Fi 6E (6GHz band) will be supported by Microso® Windows® 11. e availability will

depend on the dierent regulation status of each country and region. It will be activated (for

supported countries) through Windows Update and soware updates once available.

* A 6GHz compatible router is required for 6E functionality.

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WiFi Antennas Installation Guide

Step 1

Prepare the WiFi 2.4/5/6 GHz Antennas that

come with the package.

Step 2

Connect the two WiFi 2.4/5/6 GHz Antennas

to the antenna connectors. Turn the antenna

clockwise until it is securely connected.

Step 3

Set the WiFi 2.4/5/6 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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B660M Pro RS/AX

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 1700-Pin CPU into the socket, 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

2 3

A

B

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B660M Pro RS/AX

4

76

5

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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 se rvice.

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2.2 Installing the CPU Fan and Heatsink

1 2

B660M Pro RS/AX

CPU_FAN

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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 Technolog y with only one or three

memory module installed.

3. It is not allowed to install a DDR, DDR2 or DDR 3 memory modul e 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 c ause permanent damage to
the motherboard and the DIMM if you force the DIMM into the slot at incor rect
orientation.

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B660M Pro RS/AX

1

2

3

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2.4 Expansion Slots (PCIe Slots)

ere are 3 PCIe 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 . Please 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 PCIe x16 lane width graphics cards.

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

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

PCIe Slot Congurations

PCIE1 PCIE3

Single Graphics Card Gen4x16 N/A

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Two Graphics Cards in

CrossFireTM Mode

For a better ther mal environme nt, please connect a chassi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1/WP, CHA_ FAN2/WP or CHA_ FAN3/WP) when
using multiple graphics cards.

Gen4x16 Gen3x4

B660M Pro RS/AX

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.6, No. 24)

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 adjust the BIOS option
“Clear Status” to clear the record of previou s chassis intrusion statu s.

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2.6 Onboard Headers and Connectors

1

1

+5V

DUMMY

SIGNAL

GND

DUMMY

SPEAKER

DUMMY

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over
these headers and connectors. Placing jumpe r caps over the hea ders and connectors
will cause permanent damage to the motherboard.

System Panel Header

(9-pi n PANEL1)

(see p.6, No. 13)

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. Press the reset sw itch to restart
the computer if the compute r freezes and fails to perfor m a normal restart.

PLED (Syste m Power LED):
Connec t to the power status indicator on th e chassis front panel . e LED is on when
the system is ope rating. e LED keeps blinking when the s ystem 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 con sists
of power s witch , reset switch, power LED, hard drive activity LED, speaker and etc.
When connecting your chassi s front panel module to thi s header, 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.

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Chassis Intrusion and

Speaker Header

(7-pi n SPK _CI1)

(see p.6, No. 20)

Please connect the

chassis intrusion and the

chassis speaker to this header.

B660M Pro RS/AX

ype-C Cable

DUMMY

GND

GND

P+

P-

USB_PWR

P+

P-

USB_PWR

1

1

Serial ATA3 Connectors

Ver ti c a l:

(SATA3_0:

see p.6, No. 14)

(SATA3_1:

see p.6, No. 15)

Right Angle:

(SATA3_ 2:

see p.6, No. 12)(Upper)

(SATA3_ 3:

see p.6, No. 11)(Lower)

USB 2.0 Headers

(9-pin USB_3_4)

(see p.6, No. 19)

(9-pin USB_5_6)

(see p.6, No. 18)

USB 3.2 Gen1 Header

(19-pin USB3_5_6)

(see p.6, No. 9)

SATA3_2

SATA3_1 SATA3_0

VbusVbus

IntA_PB_SSRX-

Vbus

IntA_PA_SSRX-

IntA_PA_SSRX+

IntA_PA_SSTX-

IntA_PA_SSTX+

IntA_PA_D-

IntA_PA_D+

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

GND

IntA_PB_SSTX+

GND

IntA_PB_D-

GND

IntA_PB_D+

Dummy

ese four SATA3 connectors

support SATA data cables for

internal storage devices with

SATA3_3

up to 6.0 Gb/s data transfer

rate.

* 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 Type C USB

3.2 Gen1 Header

(20-pin F_USB3_TC_1)

(see p.6, No. 10)

USB T

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.

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