Asrock B660 Pro RS User Manual

Version 1.0

Published November 2021

Copyright©2021 ASRock INC. All rights reserved.

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Specications and information contained in this documentation are furnished for
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any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide
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In no event shall ASRock, its directors, ocers, employees, or agents be liable 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
(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

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IMPORTANT - READ BEFORE COPYING, INSTALLING OR USING.

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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

Chapter 2 Installation 9

2.1 Installing the CPU 10

2.2 Installing the CPU Fan and Heatsink 13

2.3 Installing Memory Modules (DIMM) 14

2.4 Expansion Slots (PCIe Slots) 16

2.5 Jumpers Setup 17

2.6 Onboard Headers and Connectors 18

2.7 Smart Button 23

2.8 Post Status Checker 24

2.9 CrossFireTM Operation Guide 25

2.9.1 Installing Two CrossFireTM-Ready Graphics Cards 25

2.9.2 Driver Installation and Setup 27

2.10 M.2 WiFi/BT PCIe WiFi Module and Intel® CNVi (Integrated
WiFi/BT) Installation Guide 28

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_1) 30

2.12 M.2_SSD (NGFF) Module Installation Guide (M2_2) 33

2.13 M.2_SSD (NGFF) Module Installation Guide (M2_3) 36

Chapter 3 Software and Utilities Operation 39

3.1 Installing Drivers 39

3.2 ASRock Motherboard Utility (A-Tuning) 40

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 40

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 40

3.3 ASRock Live Update & APP Shop 43

3.3.1 UI Overview 43

3.3.2 Apps 44

3.3.3 BIOS & Drivers 47

3.3.4 Setting 48

3.4 Nahimic Audio 49

3.5 ASRock Polychrome SYNC 50

Chapter 4 UEFI SETUP UTILITY 53

4.1 Introduction 53

4.2 EZ Mode 54

4.3 Advanced Mode 55

4.3.1 UEFI Menu Bar 55

4.3.2 Navigation Keys 56

4.4 Main Screen 57

4.5 OC Tweaker Screen 58

4.6 Advanced Screen 73

4.6.1 CPU Conguration 74

4.6.2 Chipset Conguration 77

4.6.3 Storage Conguration 80

4.6.4 Intel(R) Thunderbolt 81

4.6.5 Super IO Conguration 82

4.6.6 ACPI Conguration 83

4.6.7 USB Conguration 84

4.6.8 Trusted Computing 85

4.7 Tools 87

4.8 Hardware Health Event Monitoring Screen 89

4.9 Security Screen 93

4.10 Boot Screen 94

4.11 Exit Screen 97

Chapter 1 Introduction

ank you for purchasing ASRock B660 Pro RS motherboard, a reliable

motherboard produced under ASRock’s consistently stringent quality control.

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

commitment to quality and endurance.

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

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

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

the BIOS setup.

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

1.1 Package Contents

ASRock B660 Pro RS Motherboard (ATX Form Factor)

•

ASRock B660 Pro RS Quick Installation Guide

•

ASRock B660 Pro RS Support CD

•

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

•

4 x Screws for M.2 Sockets (Optional)

•

1 x Stando for M.2 Socket (Optional)

•

B660 Pro RS

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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/)

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 Max 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 (XMP) 2.0

•

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2

Expansion
Slot

Graphics

2 x PCIe x16 Slots (PCIE1/PCIE3: single at Gen4x16 (PCIE1);

•

dual at Gen4x16 (PCIE1) / Gen3x4 (PCIE3))*

* Supports NVMe SSD as boot disks

2 x PCIe Gen3x1 Slots

•

Supports AMD CrossFireTM

•

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

•

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

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

Rear Panel
I/O

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

•

2 x Antenna Mounting Points

•

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)

1 x BIOS Flashback Button

•

HD Audio Jacks: Line in / Front Speaker / Microphone

•

B660 Pro RS

Storage

4 x SATA3 6.0 Gb/s Connectors*

•

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

be disabled.

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

•

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

1 x M.2 Socket (M2_2, Key M), supports type 2260/2280

•

SATA3 6.0 Gb/s & PCIe Gen3x2 (16 Gb/s) modes**

1 x Hyper M.2 Socket (M2_ 3, Key M), supports type

•

2260/2280/22110 PCIe Gen4x4 (64 Gb/s) mode**

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3

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RAID

Connector

** Supports Intel® OptaneTM Technology (M2 _3 only)

** Supports Intel® Volume Management Device (VMD)

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

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

•

storage devices

1 x COM Port Header

•

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 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.

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

•

Speed Control)

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

maximum 2A (24W) fan power.

* CPU_FAN2/WP and CHA_FAN1~5/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 (Hi-Density Power Connec-

•

tor)

1 x Front Panel Audio Connector

•

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

•

underbolt 4 AIC Card)

1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports

•

ESD Protection)

2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)

•

(Supports ESD Protection)

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

•

Protection)

4

BIOS
Feature

Hardware
Monitor

OS

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, +1.8V 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, DRAM, VCCIN AUX,

•

+1.05V PROC, +1.05V PCH, +0.82V PCH, +1.8VSB, +12V,

+5V, +3.3V

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

•

B660 Pro RS

FCC, CE

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
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.

•

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

•

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5

1.3 Motherboard Layout

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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_LED3)

7 Addressable LED Header (ADDR_LED2)

8 ATX Power Connector (ATXPWR1)

9 Front Panel Type C USB 3.2 Gen1 Header (USB31_TC_1)

10 USB 3.2 Gen1 Header (USB3_7_8)

11 USB 3.2 Gen1 Header (USB3_5_6)

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

13 SATA3 Connector (SATA3_3)

14 SATA3 Connector (SATA3_2)

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

16 Post Status Checker (PSC)

17 SPI TPM Header (SPI_TPM_J1)

18 System Panel Header (PANEL1)

19 SATA3 Connector (SATA3_1)

20 SATA3 Connector (SATA3_0)

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

22 Clear CMOS Jumper (CLRMOS1)

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

24 USB 2.0 Header (USB_3_4)

25 COM Port Header (COM1)

26 5-pin underbolt AIC Connector (TB1)

27 RGB LED Header (RGB_LED1)

28 Addressable LED Header (ADDR_LED1)

29 Chassis Intrusion and Speaker Header (SPK_CI1)

30 Front Panel Audio Header (HD_ AUDIO1)

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

B660 Pro RS

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7

1.4 I/O Panel

1

3

2

4

10 6

11

9

8

7

5

No. Description No. Description

1 USB 2.0 Ports (USB_1_2) 7 USB 3.2 Gen1 Ports (USB3_1_2)

2 LAN RJ-45 Port* 8 DisplayPort 1.4

3 Line In (Light Blue)** 9 HDMI Port

4 Front Speaker (Lime)** 10 BIOS Flashback Button

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

6 USB 3.2 Gen1 Ports (USB3_3_4)

* 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

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8

** Function of the Au dio 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

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

•

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.

B660 Pro RS

English

9

2.1 Installing the CPU

1. Before you insert the 1700-Pin CPU into the socket, ple ase check if the P nP cap
is on the socket, if the CPU sur face is unclean, or if th ere are any b ent pins in the
socket. Do not force to insert the CPU into the socket if above situ ation is found.
Other wise, the CPU wil l be seriously d amaged.

2. Unplug all power cables be fore installing the CPU.

1

A

B

English

10

2 3

B660 Pro RS

4

76

5

11

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

12

2.2 Installing the CPU Fan and Heatsink

1 2

B660 Pro RS

CPU_FAN

English

13

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.

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 mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation .

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14

B660 Pro RS

1

2

3

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15

2.4 Expansion Slots (PCIe Slots)

ere are 4 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. Plea se read the documentation of the
expan sion card and mak e necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 4.0 x16 slot) is used for 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.

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

PCIe Slot Congurations

PCIE1 PCIE3

Single Graphics Card Gen4x16 N/A

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16

Two Graphics Cards in

CrossFireTM Mode

For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1~5/WP) when using multiple graphics cards.

Gen4x16 Gen3x4

2.5 Jumpers Setup

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

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

“Open”.

Clear CMOS Jumper

(CLRMOS1)

(see p.6, 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

B660 Pro RS

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.

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17

2.6 Onboard Headers and Connectors

SPE AKE R

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

System Panel Header

(9-pin PANEL1)

(see p.6, No. 18)

PWRBTN (Power Button):

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

RESET (Reset Button):

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

PLED (Syste m Power LED):

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

HDLED (Ha rd Drive Activity LED):

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

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

1

PLE D+

PLE D-

HDL ED-

HDL ED+

PWR BTN #

GND

RES ET#

GND

GND

Connect the power button,

reset button and system

status indicator on the

chassis to this header

according to the pin

assignments below. Note the

positive and negative pins

before connecting the cables.

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18

Chassis Intrusion and

Speaker Header

(7-pin SPK_CI1)

(see p.6, No. 29)

DUM MY
+5V

1

SIG NAL

DUM MY

GND

DUM MY

Please connect the

chassis intrusion and the

chassis speaker to this

header.

B660 Pro RS

Serial ATA3 Connectors

Right Angle:

(SATA3_2:

see p.6, No. 14)

(SATA3_3:

see p.6, No. 13)

Vertical:

(SATA3_0:

see p.6, No. 20)

(SATA3_1:

see p.6, No. 19)

USB 2.0 Header

(9-pin USB_3_4)

(see p.6, No. 24)

USB 3.2 Gen1 Headers

(19-pin USB3_5_6)

(see p.6, No. 11)

(19-pin USB3_7_8)

(see p.6, No. 10)

SATA3_0

USB _PW R

1

USB _PW R

Vbus

IntA _PA_S SRX-

IntA _PA_S SRX+

GND

IntA _PA_S STX-

IntA _PA_S STX+

GND

IntA _PA_D -

IntA _PA_D +

Dumm y

IntA _PB_ D+

IntA _PB_ D-

GND

IntA _PB_ SSTX +

IntA _PB_ SSTX -

GND

IntA _PB_ SSRX +

IntA _PB_ SSRX -

Vbus

P-

P+

P+

P-

SATA3_1

GND

DUM MY

GND

VbusVbus

IntA _PB_ SSRX -

IntA _PB_ SSRX +

GND

IntA _PB_ SSTX -

IntA _PB_ SSTX +

GND

IntA _PB_ D-

IntA _PB_ D+

Dumm y

1

1

IntA _PA_D+

IntA _PA_D-

GND

IntA _PA_SS TX+

IntA _PA_SS TX-

GND

IntA _PA_SS RX+

IntA _PA_SS RX-

Vbus

ese four SATA3

connectors support SATA

data cables for internal

SATA3_3

storage devices with up to 6.0

Gb/s data transfer rate.

SATA3_2

* If M2_2 is occupied by

a SATA-type M.2 device,

SATA3_0 will be disabled.

ere is one header on this

motherboard. is USB

2.0 header can support two

ports.

ere are two headers on

this motherboard. Each USB

3.2 Gen1 header can support

two ports.

Front Panel Type C USB

3.2 Gen1 Header

(20-pin USB31_TC_1)

(see p.6, No. 9)

USB Type-C Cable

ere is one Front Panel

Type C USB 3.2 Gen1 Header

on this motherboard. is

header is used for connecting

a USB 3.2 Gen1 module for

additional USB 3.2 Gen1

ports.

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19

Front Panel Audio Header

GND

GND

(9-pin HD_AUDIO1)

(see p.6, No. 30)

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

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

1

GND

PRE SEN CE#

MIC 2_R

MIC 2_L

MIC _RE T

J_S ENS E

OUT 2_R

OUT _RE T

OUT 2_L

is header is for connecting

audio devices to the front

audio panel.

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20

Chassis/Water Pump Fan

Connectors

(4-pin CHA_FAN1/WP)

(see p.6, No. 31)

(4-pin CHA_FAN2/WP)

(see p.6, No. 23)

(4-pin CHA_FAN3/WP)

(see p.6, No. 12)

(4-pin CHA_FAN4/WP)

(see p.6, No. 21)

(4-pin CHA_FAN5/WP)

(see p.6, No. 15)

FAN _SP EE D_C ONT RO L

CHA _FA N_ SPE ED

FAN _VO LT AGE

GND

FAN _VO LT AGE

CHA _FA N_S PE ED

FAN _SP EED _C ONT ROL

1 2 3 4

FAN _SP EE D_C ONT RO L

CHA _FA N_ SPE ED

FAN _VO LT AGE

GND

FAN _VO LT AGE

CHA _FA N_S PE ED

FAN _SP EED _C ONT ROL

1 2 3 4

FAN _SP EE D_C ONT RO L

CHA _FA N_ SPE ED

FAN _VO LT AGE

GND

is motherboard provides

ve 4-Pin water cooling

chassis fan connectors. If

4
3

you plan to connect a 3-Pin

2
1

chassis water cooler fan,

please connect it to Pin 1-3.

4
3
2
1

4
3
2
1

B660 Pro RS

4

1

8 5

CPU_ FAN_SP EED

FAN_S PEED_ CONTR OL

4 3 2 1

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.6, No. 4)

CPU/Water Pump Fan

Connector

(4-pin CPU_FAN2/WP)

(see p.6, No. 5)

ATX Power Connector

(24-pin ATXPWR1)

(see p.6, No. 8)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.6, No. 1)

4 3 2 1

GND

FAN_ VOLTA GE

CPU_ F

AN_S PEED

FAN_S PEED_ CONTR OL

12

24

1

13

is motherboard provides

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.

is motherboard provides

a 24-pin ATX power con-

nector. To use a 20-pin ATX

power supply, please plug it

along Pin 1 and Pin 13.

is motherboard

provides a 8-pin ATX 12V

power connector. To use a

4-pin ATX power supply,

please plug it along Pin 1 and

Pin 5.

*Warning: Please make

sure that the power cable

connected is for the CPU

and not the graphics card.

Do not plug the PCIe power

cable to this

connector.

Serial Port Header

(9-pin COM1)

(see p.6, No. 25)

1

RRX D1

DDT R#1

TTX D1

DDC D#1

DDS R#1

CCT S#1

RRTS #1

GND

is COM1 header supports

a serial port module.

English

RRI #1

21

SPI TPM Header

SPI_ DQ3

(13-pin SPI_TPM_J1)

(see p.6, No. 17)

1

SPI_ PWR

SPI_ CS0

SPI_ DQ2

Dumm y

CLK

RSMR ST#

SPI_ MIS O

SPI_ MOS I

RST#

TPM_ PIR Q

SPI_ TPM _CS#

GND

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 security, protects

digital identities, and ensures

platform integrity.

English

underbolt AIC

Connector

(5-pin TB1)

(see p.6, No. 26)

RGB LED Header

(4-pin RGB_LED1)

(see p.6, No. 27)

Addressable LED

Headers

(3-pin ADDR_LED1)

(see p.6, No. 28)

(3-pin ADDR_LED2)

(see p.6, No. 7)

(3-pin ADDR_LED3)

(see p.6, No. 6)

1

12V G R B

1

DO_ ADD R

VOU T

GND

Please connect a underbolt™ add-

in card (AIC) to the underbolt

AIC connector via the GPIO cable.

*Please install the underbolt™

AIC card to PCIE3 (default

slot).

is RGB header is used to connect

RGB LED extension cable which

allow users to choose from

various LED lighting eects.

Caution: Never install the

RGB LED cable in the wrong

orientation; otherwise, the cable

may be damaged.

*Please refer to page 50 for further

instructions on this header.

ese headers are used to connect

Addressable

LED extension cables

which allow users to choose from

various LED lighting

eects.

Caution: Never install the Ad-

dressable LED cable in the wrong

orientation; otherwise, the cable

may be damaged.

*Please refer to page 51 for

further instructions on this header.

22

2.7 Smart Button

e motherboard has a smart button: BIOS Flashback Button, allowing users to

ash the BIOS.

B660 Pro RS

BIOS Flashback Button

(BIOS_FB1)

BIOS Flashback Switch allows users

to ash the BIOS.

(see p.8, No. 10)

ASRock BIOS Flashback feature allows you to update BIOS without powering on the system, even
without CPU.

Before u sing the BIOS Flashback f unction, ple ase su spend BitLocker and any encryp­tion or securit y relying on the TPM. Make sure that you have already stored and
backup -ed the recovery key. If the recovery key is miss ing while encryption is active,
the data w ill stay encrypted and the system will not boot into the operating system. It
is recommende d to disable fTPM before updating the BIOS. Otherwise an unpredict­able failure may occur.

To use the USB BIOS Flashback function, Please follow the steps below.

1. Download the latest BIOS le from ASRock's website : http://www.asrock .com.

2. Copy t he BIOS le to your USB ash drive. Please make sure the le system of

your USB ash drive must be FAT32.

3. Extract BIOS  le from the zip le.

4. Rename the le to “creative.rom” and save it to the root direc tory of X : USB ash drive.

5. Plug the 24 pin power connector to t he motherboard. en turn on the power supply's AC
switch.
*ere is no need to power on t he system.

6. en plug your USB drive to the USB BIOS Flashback port.

7. Press the BIOS Flashback Switch for about three seconds. en t he LED starts to blink.

8. Wait unti l the LED stops blink ing, i ndicating that BIOS ashing has been completed.
*If the LED light turns solid green, this means that t he BIOS Flashback is not
operating properly. Please make sure that you plug the USB drive to the USB BIOS Flashback
port.
**If the LED does not light up at all then please disconnect power f rom the system and remove/
disconnect t he CMOS bat tery f rom the motherboard for several minutes. Reconnect power
and battery and try again.

USB BIOS Flashback port

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23