Asrock B660M-ITX/ac User Manual

Version 1.0

Published January 2022

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

: +886-2-28965588 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.

INTEL END USER SOFTWARE LICENSE AGREEMENT

IMPORTANT - READ BEFORE COPYING, INSTALLING OR USING.

LICENSE. Licensee has a license under Intel’s copyrights to reproduce Intel’s Soware only in its unmodied and binar y form, (with the accompanying documentation, the “Soware”) for Licensee’s personal use only, and not commercial use, in connection with Intel-based products for which the Soware has been provided, subject to the following conditions:

(a) Licensee may not disclose, distribute or transfer any part of the Soware, and You agree to prevent unauthorized copying of the Soware.

(b) Licensee may not reverse engineer, decompile, or disassemble the Soware.

(d) e Soware may contain the soware and other intellectual property of third party suppliers, some of which may be identied in, and licensed in accordance with, an enclosed license.txt le or other text or le.

(e) Intel has no obligation to provide any support, technical assistance or updates for the Soware.

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LICENSE TO USE COMMENTS AND SUGGESTIONS. is Agreement does NOT obligate Licensee to provide Intel with comments or suggestions regarding the Soware. However, if Licensee provides Intel with comments or suggestions for the modication, correction, improvement or enhancement of (a) the Soware or (b) Intel products or processes that work with the Soware, Licensee grants to Intel a non-exclusive, worldwide, perpetual, irrevocable, transferable, royalty-free license, with the right to sublicense, under Licensee’s intellectual property rights, to incorporate or otherwise utilize those comments and suggestions.

TERMINATION OF THIS LICENSE. Intel or the sublicensor may terminate this license at any time if Licensee is in breach of any of its terms or conditions. Upon termination, Licensee will immediately destroy or return to Intel all copies of the Soware.

THIRD PARTY BENEFICIARY. Intel is an intended beneciary of the End User License Agreement and has the right to enforce all of its terms.

U.S. GOVERNMENT RESTRICTED RIGHTS. e Soware is a commercial item (as dened in 48 C.F.R. 2.101) consisting of commercial computer soware and commercial computer soware documentation (as those terms are used in 48 C.F.R. 12.212), consistent with 48 C.F.R. 12.212 and 48 C.F.R 227.7202-1 through 227.7202-4. You will not provide the Soware to the U.S. Government. Contractor or Manufacturer is Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054.

EXPORT LAWS. Licensee agrees that neither Licensee nor Licensee’s subsidiaries will export/re-export the Soware, directly or indirectly, to any country for which the U.S. Department of Commerce or any other agency or department of the U.S. Government or the foreign government from where it is shipping requires an export license, or other governmental approval, without rst obtaining any such required license or approval. In the event the Soware is exported from the U.S.A. or re-exported from a foreign destination by Licensee, Licensee will ensure that the distribution and export/re-export or import of the Soware complies with all laws, regulations, orders, or other restrictions of the U.S. Export Administration Regulations and the appropriate foreign government.

APPLICABLE LAWS. is Agreement and any dispute arising out of or relating to it will be governed by the laws of the U.S.A. and Delaware, without regard to conict of laws principles. e Parties to this Agreement exclude the application of the United Nations Convention on Contracts for the International Sale of Goods (1980). e state and federal courts sitting in Delaware, U.S.A. will have exclusive jurisdiction over any dispute arising out of or relating to this Agreement. e Parties consent to persona l jurisdiction and venue in those courts. A Party that obtains a judgment against the other Party in the courts identied in this section may enforce that judgment in any court that has jurisdiction over the Parties.

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

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 6

1.4 I/O Panel 8

1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 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 Slot (PCI Express Slot) 18

2.5 Jumpers Setup 19

2.6 Onboard Headers and Connectors 20

2.7 M.2_SSD (NGFF) Module Installation Guide 24

Chapter 3 Software and Utilities Operation 28

3.1 Installing Drivers 28

3.2 ASRock Motherboard Utility (A-Tuning) 29

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 29

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 29

3.3 ASRock Live Update & APP Shop 32

3.3.1 UI Overview 32

3.3.2 Apps 33

3.3.3 BIOS & Drivers 36

3.3.4 Setting 37

3.4 ASRock Polychrome SYNC 38

Chapter 4 UEFI SETUP UTILITY 40

4.1 Introduction 40

4.2 EZ Mode 41

4.3 Advanced Mode 42

4.3.1 UEFI Menu Bar 42

4.3.2 Navigation Keys 43

4.4 Main Screen 44

4.5 OC Tweaker Screen 45

4.6 Advanced Screen 59

4.6.1 CPU Conguration 60

4.6.2 Chipset Conguration 63

4.6.3 Storage Conguration 66

4.6.4 Super IO Conguration 67

4.6.5 ACPI Conguration 68

4.6.6 USB Conguration 69

4.6.7 Trusted Computing 70

4.7 Tools 72

4.8 Hardware Health Event Monitoring Screen 74

4.9 Security Screen 76

4.10 Boot Screen 77

4.11 Exit Screen 80

B660M-ITX/ac

Chapter 1 Introduction

ank you for purchasing ASRock B660M-ITX/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 B660M-ITX /ac Motherboard (Mini-ITX Form Factor)

•

ASRock B660M-ITX /ac Quick Installation Guide

•

ASRock B660M-ITX /ac Support CD

•

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

•

1 x I/O Panel Shield

•

2 x ASRock WiFi 2.4/5 GHz Antennas (O pt iona l)

•

1 x Screw for M.2 Socket (Optional)

•

English

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/)

•

Mini-ITX Form Factor

Solid Capacitor design

Supports 12th Gen Intel® CoreTM Processors (LGA1700)

Digi Power design

6 Power Phase design

Supports Intel® Hybrid Technolog y

Supports Intel® Turbo Boost Max 3.0 Technology

Intel® B660

Dual Channel DDR4 Memory Technology

2 x DDR4 DIMM Slots

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

5000+(OC)*

Supports ECC UDIMM memory modules (operate in non-

ECC mode)

Max. capacity of system memory: 64GB

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

English

Expansion Slot

Graphics

1 x PCIe Gen4x16 Slot*

•

* Supports NVMe SSD as boot disks

1 x Vertical M.2 Socket (Key E), supports type 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

Supports HDMI 2.1 TMDS Compatible with max. resolution

•

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

Audio

LAN

Wireless LAN

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

•

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 UEFI PXE

•

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 + High speed class II

•

B660M-ITX/ac

Rear Panel I/O

Storage

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

2 x USB 3.2 Gen1 Ports (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

•

4 x SATA3 6.0 Gb/s Connectors*

•

* If M2_1 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 2280

•

SATA3 6.0 Gb/s & PCIe Gen4x4 (64 Gb/s) modes**

** Supports Intel® OptaneTM Tech nolo gy

English

RAID

Connector

** 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 Addressable LED Header

•

* Supports 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 Chassis Fan Connector (4-pin)

•

* e Chassis Fan Connector supports the chassis fan of maxi-

mum 1A (12W) fan power.

1 x Chassis/Water Pump Fan Connector (4-pin) (Smart Fan

•

Speed Control)

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

maximum 2A (24W) fan power.

* CHA_FAN1/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 USB 2.0 Header (Supports 2 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)

English

BIOS Feature

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, VCCIN AUX, +1.05V

•

PROC, +1.8V PROC, +0.82V PCH, +1.05V PCH Voltage

Multi-adjustment

Fan Tachometer: CPU, Chassis, Chassis/Water Pump Fans

Hardware Monitor

•

Quiet Fan (Auto adjust chassis fan speed by CPU tempera-

•

ture): CPU, Chassis, Chassis/Water Pump Fans

Fan Multi-Speed Control: CPU, Chassis, Chassis/Water

•

Pump Fans

Voltage monitoring: CPU Vcore, +12V, +5V, +3.3V, +1.05V

•

PCH

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

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)

•

B660M-ITX/ac

English

1.3 Motherboard Layout

PCIE1

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

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

CPU_FAN1

CHA_FAN1/WP

RoHS

B660M-ITX/ac

Intel

B660

ATXPWR1

USB3_ 3_4

Top:

LINE I N

Cent er:

FRON T

Bott om:

MIC IN

SATA3_3

SATA3_2

CLRMOS1

SATA3_1

SATA3_0

M2_WIFI1

CHA_FAN2

ADDR_LED1

M2_1

F_USB31_TC_1

Top: RJ-45

USB 2.0 T: USB1 B: USB2

PS2

Keyb oard

/Mou se

USB 3.2 Gen1 T: USB3_1 B: USB3_2

HDM I1

DP1

HD_AUDIO1

PANEL1

HDLED RESE T

PLED PWRBT N

USB_3_4

SPEAKER1

English

No. Description

1 Chassis Fan Connector (CHA_FAN2)

2 ATX 12V Power Connector (ATX12V1)

3 CPU Fan Connector (CPU_FAN1)

4 Chassis/Waterpump Fan Connector (CHA_FAN1/WP)

5 Addressable LED Header (ADDR_LED1)

6 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

7 ATX Power Connector (ATXPWR1)

8 Front Panel Type C USB 3.2 Gen1 Header (F_USB31_TC_1)

9 USB 3.2 Gen1 Header (USB3_ 3_4)

10 SATA3 Connector (SATA3_1)

11 SATA3 Connector (SATA3_0)

12 SATA3 Connector (SATA3_3)

13 SATA3 Connector (SATA3_2)

14 System Panel Header (PANEL1)

15 USB 2.0 Header (USB_3_4)

16 Clear CMOS Jumper (CLRMOS1)

17 Chassis Speaker Header (SPEAKER1)

18 Front Panel Audio Header (HD_AUDIO1)

B660M-ITX/ac

English

1.4 I/O Panel

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 6 Antenna Ports

2 LAN RJ-45 Port* 7 USB 2.0 Ports (USB12)

3 Line In (Light Blue)** 8 USB 3.2 Gen1 Ports (USB3_12)

4 Front Speaker (Lime)** 9 DisplayPort 1.4

5 Microphone (Pink)** 10 HDMI Port

* 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

9 6

578

English

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

B660M-ITX/ac

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 module

(pre-installed on the rear I/O panel) that oers support for WiFi 802.11 a/b/g/n/ac

connectivity standards and Bluetooth. WiFi + BT module is an easy-to-use wireless

local area network (WLAN) adapter to support WiFi + 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.

English

WiFi Antennas Installation Guide

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.

English

Chapter 2 Installation

is is a Mini-ITX 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.

B660M-ITX/ac

English

2.1 Installing the CPU

1. Before you insert the 1700-Pin CPU into the socket, please check if the PnP ca p is on the socket, if the CPU sur face is unclean, or if th ere are any bent 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 c ables before in stalling the CPU.

English

2 3

B660M-ITX/ac

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

2.2 Installing the CPU Fan and Heatsink

1 2

B660M-ITX/ac

CPU_FAN

English

2.3 Installing Memory Modules (DIMM)

is motherboard provides two 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 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.

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.

English

B660M-ITX/ac

English

2.4 Expansion Slot (PCI Express Slot)

ere is 1 PCI Express slot slot 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 slot:

PCIE1 (PCIe 4.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

English

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. 16)

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

B660M-ITX/ac

English

2.6 Onboard Headers and Connectors

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-pi n PANEL1)

(see p.6, No. 14)

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.

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

B660M-ITX/ac

Serial ATA3 Connectors

(SATA3_0:

see p.6, No. 11)

(SATA3_1:

see p.6, No. 10)

(SATA3_ 2:

see p.6, No. 13)

(SATA3_ 3:

see p.6, No. 12)

USB 2.0 Header

(9-pin USB_3_4)

(see p.6, No. 15)

USB 3.2 Gen1 Header

(19-pin USB3_3_4)

(see p.6, No. 9)

SATA3_1

SATA3_3

Vbus

IntA_PA_SSRX-

IntA_PA_SSRX+

GND

IntA_PA_SSTX-

IntA_PA_SSTX+

GND

IntA_PA_D-

IntA_PA_D+

VbusVbus

IntA_PB_SSRX-

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

IntA_PB_SSTX+

GND

IntA_PB_D-

IntA_PB_D+

Dummy

ese four SATA3

connectors support SATA

data cables for internal

SATA3_0

storage devices with up to

6.0 Gb/s data transfer rate.

SATA3_2

* If M2_1 is occupied by

a SATA-type M.2 device,

SATA3_0 will be disabled.

ere is one USB2.0

header on this

motherboard. is USB

2.0 header can support

two ports.

ere is one 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_USB31_TC_1)

(see p.6, No. 8)

Front Panel Audio Header

(9-pin HD_ AUDIO1)

(see p.6, No. 18)

MIC2_L

MIC2_R

OUT2_R

J_SENS

OUT2_L

USB Type-C Cable

PRESENCE#

MIC_RET

OUT_RET

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.

is header is for

connecting audio devices

GND

to the front audio panel.

English

4 3 2 1

1. High Denition Au dio supports Jack Sen sing, but the panel wire on the chas sis 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 adjust “Recording Volume”.

English

Chassis Speaker Header

(4-p i n SPEAKER1)

(see p.6, No. 17)

Chassis/Water Pump Fan

Connector

(4-pin CHA_FAN1/WP)

(see p.6, No. 4)

Chassis Fan Connector

(4-pin CHA_FAN2)

(see p.6, No. 1)

SPEAKER

DUMMY

+5V

FAN_SPEED_CONTROL

CHA_FAN_SPEED

FAN_VOLTAGE

FAN_SPEED_CONTROL

CHA_FAN_SPEED

+12V

Please connect the chassis

speaker to this header.

is motherboard

provides a 4-Pin water

cooling

chassis

connector. If you plan to

connect a 3-Pin

GND

water cooler fan, please

connect it to Pin 1-3.

Please connect fan cables

to the fan connector and

match the black wire to

the ground pin.

GND

fan

chassis

B660M-ITX/ac

8 5

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.6, No. 3)

ATX Power Connector

(24-p i n ATX PWR1)

(see p.6, No. 7)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.6, No. 2)

4 3 2 1

GND

+12V

CPU_F

AN_SPEED

FAN_SPEED_CONTROL

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 pro-

vides a 24-pin ATX power

connector.

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.

Addressable LED Header

(3-pin A DDR _LED1)

(see p.6, No. 5)

VOUT

DO_ADDR

GND

is header is used to connect

Addressable

LED extension cable

which allows users to choose

from various LED lighting

eects.

Caution: Never install the

Addressable LED cable in the

wrong orientation; otherwise,

the cable may be damaged.

* Please refer to page 38 for

further instructions on this

header.

English

2.7 M.2_SSD (NGFF) Module Installation Guide

e M.2, also known as the Next Generation Form Factor (NGFF), is a small size and

versatile card edge connector that aims to replace mPCIe and mSATA. e Hyper M.2

Socket (M2_1, Key M) supports type 2280 SATA3 6.0 Gb/s & PCIe Gen4x4 (64 Gb/s)

modes.

* Please be noted that if M2_1 is occupied by a SATA-type M.2 device, SATA3_0 will be

disabled.

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_SSD (NGFF) module

and the screw.

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

location to be used.

English

No. 1

Nut Location A

PCB Length 8cm

Module Type Type 228 0

B660M-ITX/ac

Step 3

Align and gently insert the M.2

(NGFF) SSD module into the M.2

slot. Please be aware that the M.2

(NGFF) SSD module only ts in one

orientation.

Step 4

Tighten the screw with a screwdriver

to secure the module into place.

Please do not overtighten the screw as

NUT1NUT2

this might damage the module.

English

M.2_SSD (NGFF) Module Support List

Vendor Interface P/N

ADATA SATA3 AXNS330E-32GM-B ADATA SATA3 AXNS381E-128GM-B ADATA SATA3 AXNS381E -25 6GM-B ADATA SATA3 ASU800NS38-256GT-C ADATA SATA3 ASU800NS38-512GT-C ADATA PCIe3 x4 ASX7000NP-128GT-C ADATA PCIe3 x4 ASX8000NP-256GM-C ADATA PCIe3 x4 ASX7000NP-256GT-C ADATA PCIe3 x4 ASX8000NP-512GM-C ADATA PCIe3 x4 ASX7000NP-512GT-C Apacer PCIe3 x4 AP240GZ280 Corsair PCIe3 x4 CSSD-F240GBMP500 Crucial SATA3 CT120M500SSD4 Crucial SATA3 CT240M500SSD4 Intel SATA3 Intel SSDSCKGW080A401/80G Intel PCIe3 x4 SSDPEKKF256G7 Intel PCIe3 x4 SSDPEKKF512G7 Kingston SATA3 SM2280S3 Kingston PCIe3 x4 SKC1000/480G Kingston PCIe2 x4 SH2280S3/480G OCZ PCIe3 x4 RVD400-M2280-512G (NVME) PAT R IOT PCIe3 x4 PH240GPM280SSDR NVME Plextor PCIe3 x4 PX-128M8PeG Plextor PCIe3 x4 P X-1TM8Pe G Plextor PCIe3 x4 PX-256M8PeG Plextor PCIe3 x4 PX-512 M8PeG Plextor PCIe PX-G25 6M6e Plextor PCIe PX-G512M6e Samsung PCIe3 x4 SM961 MZVPW128HEGM (NVM) Samsung PCIe3 x4 PM961 MZVLW128HEGR (NVME) Samsung PCIe3 x4 960 EVO (MZ-V6E250) (NVME) Samsung PCIe3 x4 960 EVO (MZ-V6E250BW) (NVME) Samsung PCIe3 x4 SM951 (NV ME) Samsung PCIe3 x4 SM951 (MZHPV256HDGL) Samsung PCIe3 x4 SM951 (M ZHPV512HDGL) Samsung PCIe3 x4 SM951 (NV ME) Samsung PCIe x4 XP941-512G (MZHPU512HCGL) SanDisk PCIe SD6PP4 M-128 G SanDisk PCIe SD6PP4M-256G Team SATA3 TM4PS4128GMC105 Team SATA3 TM4 PS 4256GMC105 Team SATA3 TM8PS4128GMC105 Team SATA3 TM8PS4256GMC105

B660M-ITX/ac

TEAM PCIe3 x4 TM8FP2240G0C101 TEAM PCIe3 x4 TM8FP2480GC110 Tra nscend SATA 3 TS256GMTS400 Tra nscend SATA 3 TS512GMTS600 Tra nscend SATA 3 TS512GMTS800 V-Col or SATA3 VLM100-120G-2280B-RD V-Col or SATA3 VL M10 0-24 0G-228 0RGB V-Col or SATA3 VSM100 -240G-2280 V-Col or SATA3 VL M10 0-24 0G-228 0B -R D WD SATA3 WDS100T1B0B-00AS40 WD SATA3 WDS240G1G0B-00RC30 WD PCIe3 x4 WDS256G1X0C-00ENX0 (NVME) WD PCIe3 x4 WDS512G1X0C- 00ENX0 (N VME)

For the latest updates of M.2_SSD (NFGG) module support list, please visit our website for

details: http://www.asrock.com

English

Chapter 3 Software and Utilities Operation

3.1 Installing Drivers

e Support CD that comes with the motherboard contains necessary drivers and

useful utilities that enhance the motherboard’s features.

Running The Support CD

To begin using the support CD, insert the CD into your CD-ROM drive. e CD

automatically displays the Main Menu if “AUTORUN” is enabled in your computer.

If the Main Menu does not appear automatically, locate and double click on the le

“ASRSETUP.EXE” in the Support CD to display the menu.

Drivers Menu

e drivers compatible to your system will be auto-detected and listed on the

support CD driver page. Please click Install All or follow the order from top to

bottom to install those required drivers. erefore, the drivers you install can work

properly.

Utilities Menu

e Utilities Menu shows the application soware that the motherboard supports.

Click on a specic item then follow the installation wizard to insta ll it.

English

3.2 ASRock Motherboard Utility (A-Tuning)

ASRock Motherboard Utilit y (A-Tuning) is ASRock’s multi purpose soware suite

with a new interface, more new features and improved utilities.

3.2.1 Installing ASRock Motherboard Utility (A-Tuning)

ASRock Motherboard Utilit y (A-Tuning) can be downloaded from ASRock Live

Update & APP Shop. Aer the installation, you will nd the icon “ASRock Mother-

board Utility (A-Tuning)“ on your desktop. Double-click the

“ASRock Motherboard Utilit y (A-Tuning)“ icon, ASRock Motherboard Utility

(A-Tu n i ng) main menu will pop up.

3.2.2 Using ASRock Motherboard Utility (A-Tuning)

ere are ve sections in ASRock Motherboard Utility (A-Tuning) main menu:

Operation Mode, OC Tweaker, System Info, FAN-Tastic Tuning and Settings.

Operation Mode

Choose an operation mode for your computer.

B660M-ITX/ac

English

OC Tw eaker

Congurations for overclocking the system.

System Info

View information about the system.

*e System Browser tab may not appear for certain models.

English

B660M-ITX/ac

FAN-Tastic Tuning

Congure up to ve dierent fan speeds using the graph. e fans will automatically shi

to the next speed level when the assigned temperature is met.

Settings

Congure ASRock ASRock Motherboard Utility (A-Tuning). Click to select "Auto

run at Windows Startup" if you want ASRock Motherboard Utility (A-Tuning) to

be launched when you start up the Windows operating system.

English

3.3 ASRock Live Update & APP Shop

e ASRock Live Update & APP Shop is an online store for purchasing and

downloading soware applications for your ASRock computer. You can quick ly and

easily insta ll various apps and support utilities. With ASRock Live Update & APP

Shop, you can optimize your system and keep your motherboard up to date simply

with a few clicks.

Double-click on your desktop to access ASRock Live Update & APP Shop utility.

*You need to be connected to the Internet to download apps f rom the ASRock Live Update & APP Shop.

3.3.1 UI Overview

Category Panel

Hot News

English

Information Panel

Category Panel: e category panel contains several category tabs or buttons that

when selected the information panel below displays the relative information.

Information Panel: e information panel in the center displays data about the

currently selected category and allows users to perform job-related tasks.

Hot News: e hot news section displays the various latest news. Click on the image

to visit the website of the selected news and know more.

3.3.2 Apps

When the "Apps" tab is selected, you will see all the available apps on screen for you

to download.

Installing an App

Step 1

Find the app you want to install.

B660M-ITX/ac

e most recommended app appears on the le side of the screen. e other various

apps are shown on the right. Please scroll up and down to see more apps listed.

You can check the price of the app and whether you have already intalled it or not.

- e red icon displays the price or "Free" if the app is free of charge.

- e green "Installed" icon means the app is installed on your computer.

Step 2

Click on the app icon to see more details about the selected app.

English

Step 3

If you want to install the app, click on the red icon to start downloading.

Step 4

When installation completes, you can nd the green "Installed " icon appears on the

upper right corner.

English

To uninstall it, simply click on the trash can icon . *e trash icon may not appear for certain apps.

Upgrading an App

You can only upgrade the apps you have already installed. When there is an

available new version for your app, you will nd the mark of "New Version"

appears below the installed app icon.

Step 1

Click on the app icon to see more details.

B660M-ITX/ac

Step 2

Click on the yellow icon to start upgrading.

English

3.3.3 BIOS & Drivers

Installing BIOS or Drivers

When the "BIOS & Drivers" tab is selected, you will see a list of recommended or

critical updates for the BIOS or drivers. Please update them all soon.

Step 1

Please check the item information before update. Click on to see more details.

Step 2

English

Click to select one or more items you want to update.

Step 3

Click Update to start the update process.

3.3.4 Setting

In the "Setting" page, you can change the language, select the server location, and

determine if you want to automatically run the ASRock Live Update & APP Shop

on Windows startup.

B660M-ITX/ac

English

3.4 ASRock Polychrome SYNC

ASRock Polychrome SYNC is a lighting control utility specically designed for unique indi-

viduals with sophisticated tastes to build their own stylish colorful lighting system. Simply by

connecting the LED strip, you can customize various lighting schemes and patterns, including

Static, Breathing, Strobe, Cycling, Music, Wave and more.

Connecting the Addressable RGB LED Strip

Connect your

the motherboard.

Addressable RGB LED

RoHS

strips to the

B660M-ITX/ac

Addressable LED Header (ADDR_ LED1)

ADDR_LED1

GND

DO_ADDR

VOUT

English

1. Never install the RGB LED cable in the wrong or ientation; otherwise, the cable may be damaged.

2. Before installing or removing your RGB LED cable, pl ease power o your system and unplug the powe r cord from the power supply. Failure to do so m ay cause damages to motherboard components.

1. Please note that the RGB LED strips d o not come with the pa ckage .

2. e RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/ GND), with a ma ximum power rating of 3A (5V) and length w ithin 2 meters.

ASRock Polychrome SYNC Utility

Now you can adjust the RGB LED color through the ASRock Polychrome SYNC Utility.

Download this utility from the ASRock Live Update & APP Shop and start coloring your

PC style your way!

Drag the tab to customize your

preference.

Toggle on/o the

RGB LED switch

Sync RGB LED eects

for all LED regions of

the motherboard

Select a RGB LED light eect

from the drop-down menu.

B660M-ITX/ac

English

Chapter 4 UEFI SETUP UTILITY

4.1 Introduction

is section explains how to use the UEFI SETUP UTILITY to congure your

system. You may run the UEFI SETUP UTILITY by pressing <F2> or <Del> right

aer you power on the computer, other wise, the Power-On-Self-Test (POST) will

continue with its test routines. If you wish to enter the UEFI SETUP UTILITY aer

POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the

reset button on the system chassis. You may also restart by turning the system o

and then back on.

Becau se the UEFI soware is constantly being upd ated, the following UEFI setup screens and de scriptions are for reference purpose only, and they may not exactly match what you see on your scre en.

English

B660M-ITX/ac

4.2 EZ Mode

e EZ Mode screen appears when you enter the BIOS setup program by default. EZ

mode is a dashboard which contains multiple readings of the system’s current status.

You can check the most crucial information of your system, such as CPU speed,

DRAM frequency, SATA information, fan speed, etc.

Press <F6> or click the "Advanced Mode" button at the upper right corner of the

screen to switch to "Advanced Mode" for more options.

No. Function

Help

Load UEFI Defaults

Save Changes and Exit

Discard Changes

Change Language

Switch to Advanced Mode

English

4.3 Advanced Mode

e Advanced Mode provides more options to congure the BIOS settings. Refer to

the following sections for the detailed congurations.

To access the EZ Mode, press <F6> or click the "EZ Mode" button at the upper right

corner of the screen.

4.3.1 UEFI Menu Bar

e top of the screen has a menu bar with the following selections:

Main

OC Tweaker

Advanced

Tool

H/W Monitor

Security

Boot

Exit

For setting system time/date information

For overclocking congurations

For advanced system congurations

Useful tools

Displays current hardware status

For security settings

For conguring boot settings and boot priority

Exit the current screen or the UEFI Setup Utility

English

4.3.2 Navigation Keys

Use < > key or < > key to choose among the selections on the menu bar, and

use < > key or < > key to move the cursor up or down to select items, then

press <Enter> to get into the sub screen. You can also use the mouse to click your

required item.

Please check the following table for the descriptions of each navigation key.

Navigation Key(s) Description

B660M-ITX/ac

+ / -

<Tab>

<PGUP>

<PGDN>

<HOME>

<END>

<F1>

<F5>

<F7>

<F9>

<F10>

<F12>

<ESC>

To change option for the selected items

Switch to next function

Go to the previous page

Go to the next page

Go to the top of the screen

Go to the bottom of the screen

To display the General Help Screen

Add / Remove Favorite

Discard changes and exit the SETUP UTILITY

Load optimal default values for all the settings

Save changes and exit the SETUP UTILITY

Print screen

Jump to the Exit Screen or exit the current screen

English

4.4 Main Screen

When you enter the UEFI SETUP UTILITY, the Main screen will appear and

display the system overview.

e availability and location of BIOS settings can be dierent for dierent models and BIOS versions .

English

My Favorite

Display your collection of BIOS items. Press F5 to add/remove your favorite items.

4.5 OC Tweaker Screen

In the OC Tweaker screen, you can set up overclocking features.

B660M-ITX/ac

CPU Vcore Compensation

is option will make cpu to run at higher vcore as default. Please try to adjust

this option when your cpu is not stable at default setting. Higher level will provide

higher vcore.

Base Frequency Boost

Enjoy the base frequency boost with the hidden power of processors immediately.

CPU Conguration

CPU Turbo Ratio Information

is item allows users to browse the CPU Turbo Ratio information.

CPU Conguration

English

CPU P-Core Ratio

e CPU speed is determined by the CPU P-Core Ratio multiplied with the BCLK.

Increasing the CPU P-Core Ratio will increase the internal CPU clock speed

without aecting the clock speed of other components.

AVX2 Ratio Oset

AVX2 Ratio Oset species a negative oset from the CPU Ratio for AVX

workloads. AVX is a more stressful workload that lower the AVX ratio to ensure

maximum possible ratio for SSE workloads.

CPU E-Core Ratio

e E-Core speed is determined by the E-Core Ratio multiplied with the BCLK.

Increasing the E-Core Ratio will increase the internal E-Core clock speed without

aecting the clock speed of other components.

CPU Cache Ratio

e CPU Interna l Bus Speed Ratio. e maximum should be the same as the CPU

Ratio.

BCLK Aware Adaptive Voltage

BCLK Aware Adaptive Voltage enable/disable. When enabled, pcode will be aware

of the BCLK frequency when calculating the CPU V/F curves. is is ideal for

BCLK OC to avoid high voltage overrides.

English

Boot Performance Mode

Select the performance state that the BIOS will set before OS hando.

Ring to Core Ratio Oset

Disable Ring to Core Ratio Oset so the ring and core can run at the same fre-

quency.

SA PLL Frequency Override

Congure SA PLL Frequency.

BCLK TSC HW Fixup

BCLK TSC HW Fixup disable during TSC copy from PMA to APIC.

FLL Overclocking Mode

Nominal is good for normal core ratio overclocking. Elevated and Extremely El-

evated are good for high BCLK OC.

Intel SpeedStep Technology

Intel SpeedStep technology allows processors to switch between multiple frequen-

cies and voltage points for better power saving and heat dissipation.

Intel Turbo Boost Technology

Intel Turbo Boost Technology enables the processor to run above its base operating

frequency when the operating system requests the highest performance state.

Intel Speed Shift Technology

Enable/Disable Intel Speed Shi Technology support. Enabling will expose the

CPPC v2 interface to allow for hardware controlled P-sates.

Intel Turbo Boost Max Technology 3.0

Intel Turbo Boost Technology enables the processor to run above its base operating

frequency when the operating system requests the highest performance state.

Intel Thermal Velocity Boost Voltage Optimizations

is service controls thermal based voltage optimizations for processors that

implment the Intel ermal Velocity Boost (TVB) feature.

Dual Tau Boost

Enable Dual Tau Boost feature. is is only applicable for CMLS 35W/65W/125W

skus. is item is only supported with processors with Cong TDP support.

B660M-ITX/ac

Long Duration Power Limit

Congure Package Power Limit 1 in watts. When the limit is exceeded, the CPU

ratio will be lowered aer a period of time. A lower limit can protect the CPU and

save power, while a higher limit may improve performance.

Long Duration Maintained

Congure the period of time until the CPU ratio is lowered when the Long

Duration Power Limit is exceeded.

Short Duration Power Limit

Congure Package Power Limit 2 in watts. When the limit is exceeded, the CPU

ratio will be lowered immediately. A lower limit can protect the CPU and save

power, while a higher limit may improve performance.

CPU Core Current Limit

Congure the current limit of the CPU core. A lower limit can protect the CPU and

save power, while a higher limit may improve performance.

English

GT Current Limit

Congure the current limit of the GT slice. A lower limit can protect the CPU and

save power, while a higher limit may improve performance.

PSU Select Guide

Adjust CPU Power Limit and ICCMAX settings to avoid system reboot when using

low wattage power supplies.

DRAM Conguration

Memory Information

Allows users to browse the serial presence detect (SPD) and Intel extreme memory prole

(XMP) for DDR4 modules.

DRAM Timing Conguration

DRAM Reference Clock

Select Auto for optimized settings.

DRAM Frequency

If [Auto] is selected, the motherboard will detect the memory module(s) inserted

and assign the appropriate frequency automatically.

DRAM Gear Mode

High gear is good for high frequency.

English

Primary Timing

CAS# Latency (tCL)

e time between sending a column address to the memory and the beginning of the data

in response.

RAS# to CAS# Delay (tRCD)

RAS# to CAS# Delay : e number of clock cycles required between the opening of a row

of memory and accessing columns within it.

Row Precharge (tRP)

Row Precharge: e number of clock cycles required between the issuing of the precharge

command and opening the next row.

B660M-ITX/ac

RAS# Active Time (tRAS)

e number of clock cycles required between a bank active command and issuing the

precharge command.

Command Rate (CR)

e delay between when a memor y chip is selected and when the rst active command can

be issued.

Secondary Timing

Write Recovery Time (tWR)

e amount of delay that must elapse aer the completion of a valid write operation,

before an active bank can be precharged.

Refresh Cycle Time (tRFC)

e number of clocks from a Refresh command until the rst Activate command to

the same rank.

RAS to RAS Delay (tRRD_L)

e number of clocks between two rows activated in dierent banks of the same

rank.

RAS to RAS Delay (tRRD_S)

e number of clocks between two rows activated in dierent banks of the same

rank.

Write to Read Delay (tWTR_L)

e number of clocks between the last valid write operation and the next read

command to the same internal bank.

Write to Read Delay (tWTR_S)

e number of clocks between the last valid write operation and the next read

command to the same internal bank.

Read to Precharge (tRTP)

e number of clocks that are inserted between a read command to a row pre-

charge command to the same rank.

Four Activate Window (tFAW)

e time window in which four activates are allowed the same rank.

English

CAS Write Latency (tCWL)

Congure CAS Write Latency.

Third Timing

tREFI

Congure refresh cycles at an average periodic interval.

tCKE

Congure the period of time the DDR4 initiates a minimum of one refresh

command internally once it enters Self-Refresh mode.

Turn Around Timing

Turn Around Timing Optimization

Auto is enabled in general case.

TAT Training Value

tRDRD_sg

Congure between module read to read delay.

tRDRD_dg

Congure between module read to read delay.

tRDRD_dr

Congure between module read to read delay.

English

tRDRD_dd

Congure between module read to read delay.

tRDWR_sg

Congure between module read to write delay.

tRDWR_dg

Congure between module read to write delay.

tRDWR_dr

Congure between module read to write delay.

tRDWR_dd

Congure between module read to write delay.

tWRRD_sg

Congure between module write to read delay.

tWRRD_dg

Congure between module write to read delay.

tWRRD_dr

Congure between module write to read delay.

tWRRD_dd

Congure between module write to read delay.

tWRWR_sg

Congure between module write to write delay.

tWRWR_dg

Congure between module write to write delay.

tWRWR_dr

Congure between module write to write delay.

B660M-ITX/ac

tWRWR_dd

Congure between module write to write delay.

TAT Runtime Value

tRDRD_sg

Congure between module write to read delay.

tRDRD_dg

Congure between module write to read delay.

tRDRD_dr

Congure between module write to read delay.

tRDRD_dd

Congure between module write to read delay.

tRDWR_sg

Congure between module write to read delay.

English

tRDWR_dg

Congure between module write to read delay.

tRDWR_dr

Congure between module write to read delay.

tRDWR_dd

Congure between module write to read delay.

tWRRD_sg

Congure between module write to read delay.

tWRRD_dg

Congure between module write to read delay.

tWRRD_dr

Congure between module write to read delay.

tWRRD_dd

Congure between module write to read delay.

tWRWR_sg

Congure between module write to write delay.

English

tWRWR_dg

Congure between module write to write delay.

tWRWR_dr

Congure between module write to write delay.

tWRWR_dd

Congure between module write to write delay.

Round Trip Timing

Round Trip Timing Optimization

Auto is enabled in general case.

Round Trip Level

Congure round trip level.

Initial RTL IO Delay Oset

Congure round trip latency IO delay initial oset.

Initial RTL FIF0 Delay Oset

Congure round trip latency FIF0 delay initial oset.

Initial RTL (MC0 C0 A1)

Congure round trip latency initial value.

Initial RTL (MC0 C1 A1)

Congure round trip latency initial value.

Initial RTL (MC1 C0 B1)

Congure round trip latency initial value.

Initial RTL (MC1 C1 B1)

Congure round trip latency initial value.

RTL (MC0 C0 A1)

Congure round trip latency.

B660M-ITX/ac

RTL (MC0 C1 A1)

Congure round trip latency.

RTL (MC1 C0 B1)

Congure round trip latency.

RTL (MC1 C1 B1)

Congure round trip latency.

ODT Setting

Dimm ODT Training

ODT values will be optimized by Dimm On-Die Termination Training.

ODT WR (A1)

Congure the memory on die termination resistors' WR for channel A1.

ODT WR (B1)

Congure the memory on die termination resistors' WR for channel B1.

English

ODT NOM (A1)

Congure the memory on die termination resistors' NOM for channel A1.

ODT NOM (B1)

Congure the memory on die termination resistors' NOM for channel B1.

ODT PARK (A1)

Congure the memory on die termination resistors' PARK for channel A1.

ODT PARK (B1)

Congure the memory on die termination resistors' PARK for channel B1.

Advanced Setting

ASRock Timing Optimization

Congure the fast path through the MRC.

ASRock Second Timing Optimization

Congure the second fast path through the MRC.

MRC Training Respond Time

Congure the MRC Training Respond Time.

Realtime Memory Timing

Congure the realtime memory timings.

English

[Enabled] e system will allow performing realtime memory timing changes aer

MRC_DONE.

Reset for MRC Failed

Reset system aer MRC training is failed.

MRC Training on Warm Boot

When enabled, memory training will be executed when warm boot.

MRC Fast Boot

Enable Memory Fast Boot to skip DRAM memory training for booting faster.

Voltage Conguration

Voltage Mode

[OC]: Larger range voltage for overclocking.

[STABLE]: Smaller range voltage for stable system.

CPU Core/Cache Voltage

Input voltage for the processor by the external voltage regulator.

CPU Core/Cache Load-Line Calibration

CPU Core/Cache Load-Line Calibration helps prevent CPU Core/Cache voltage

droop when the system is under heavy loading.

VID Step

Allows users to set VID Step as 5mV or 10mV.

CPU GT Voltage

Congure the voltage for the integrated GPU.

CPU GT Load-Line Calibration

GT Load-Line Calibration helps prevent integrated GPU voltage droop when the

system is under heav y load.

DRAM Voltage

Use this to congure DRAM Voltage. e default value is [Auto].

B660M-ITX/ac

VDD_IMC Voltage

VDD_IMC Voltage for memory controller.

VCCIN AUX Voltage

Congure the voltage for the VCCIN AUX.

+1.8V PROC Voltage

Congure the voltage for the +1.8V PROC.

+1.05V PROC Voltage

Congure the voltage for the +1.05V PROC.

+0.82V PCH Voltage

Congure the voltage for the +0.82V PCH.

+1.05 PCH Voltage

Congure the voltage for the +1.05 PCH.

English

AVX Conguration

AVX2 Voltage Guardband Scale Factor

AVX2 Voltage Guardband Scale Factor controls the voltage guardband applied to

AVX2 workloads. A value > 1.00 will increase the voltage guardband, and < 1.00 will

decrease the voltage guardband.

FIVR Conguration

P-Core Voltage Mode

Selects between Adaptive and Override Voltage modes. In Override Mode, the

voltage selected will be applied over all operating frequencies. In Adaptive mode, the

voltage is interpolated only in turbo mode.

Extra Turbo Voltage

Species the extra turbo voltage applied while the IA Core is operating in turbo

mode.

VF Oset Mode

Selects between Legacy and Selection modes. Need Reset System aer enabling

OverClocking Feature to initialize the default value. In Legacy Mode, setting a

global oset for the entire VF curve. In Selection modes, setting a selected VF point.

VF Conguration Scope

Allows all cores VF curve or per-core VF curve conguration.

English

Core Voltage Oset

Species the oset voltage applied to the IA Core domain. is voltage is specied in

millivolts.

Oset Prex

Sets the oset value as positive or negative.

E-Core L2 Voltage Mode

Selects between adaptive and Override Voltage modes. In Override Mode the voltage

selected will be applied over all operating frequencies. In Adaptive Mode the voltage

is interpolated only in turbo mode.

Extra Turbo Voltage

Species the extra turbo voltage applied while Atom L2 is operating in turbo mode.

E-Core L2 Voltage Oset

Species the Oset Voltage applied to the Atom L2 domain. is voltage is specied

in millivolts.

Oset Prex

Sets the oset value as positive or negative.

Ring Voltage Mode

Selects between adaptive and Override Voltage modes. In Override Mode the

voltage selected will be applied over all operating frequencies. In Adaptive Mode

the voltage is interpolated only in turbo mode.

Extra Turbo Voltage

Species the extra turbo voltage applied while ring is operating in turbo mode.

VF Oset Mode

Selects between Legacy and Selection modes. Need Reset System aer enabling

OverClocking Feature to initialize the default va lue. In Legacy Mode, setting a

global oset for the entire VF curve. In Selection modes, setting a selected VF point.

Ring Voltage Oset

Species the Oset Voltage applied to the Ring domain. is voltage is specied in

millivolts.

B660M-ITX/ac

Oset Prex

Sets the oset value as positive or negative.

GT Voltage Mode

Selects between adaptive and Override Voltage modes. In Override Mode the

voltage selected will be applied over all operating frequencies. In Adaptive Mode

the voltage is interpolated only in turbo mode.

Extra Turbo Voltage

Species the extra turbo voltage applied while GT is operating in turbo mode.

GT Voltage Oset

Species the Oset Voltage applied to the GT domain. is voltage is specied in

millivolts.

Oset Prex

Sets the oset value as positive or negative.

System Agent Voltage Mode

Selects between adaptive and Override Voltage modes. In Override Mode the

voltage selected will be applied over all operating frequencies. In Adaptive Mode

English

the voltage is interpolated only in turbo mode.

Extra Turbo Voltage

Species the extra turbo voltage applied while SA Uncore is operating in turbo

mode.

System Agent Voltage Oset

Species the Oset Voltage applied to the Uncore domain. is voltage is specied

in millivolts.

Oset Prex

Sets the oset value as positive or negative.

Save User Default

Type a prole name and press enter to save your settings as user default.

Load User Default

Load previously saved user defaults.

Save User UEFI Setup Prole to Disk

It helps you to save current UEFI settings as an user prole to disk.

Load User UEFI Setup Prole from Disk

You can load previous saved prole from the disk.

English

B660M-ITX/ac

4.6 Advanced Screen

In this section, you may set the congurations for the following items: CPU

Conguration, Chipset Conguration, Storage Conguration, Super IO Conguration,

ACPI Conguration, USB Conguration and Trusted Computing.

Setting wrong values in this sec tion may cause the system to malfunction.

UEFI Conguration

UEFI Setup Style

Select the default mode when entering the UEFI setup utility.

Active Page on Entry

Select the default page when entering the UEFI setup utility.

Full HD UEFI

When [Auto] is selected, the resolution will be set to 1920 x 1080 if the monitor

supports Full HD resolution. If the monitor does not support Full HD resolution,

then the resolution will be set to 1024 x 768. When [Disable] is selected, the

resolution will be set to 1024 x 768 directly.

English

4.6.1 CPU Conguration

Processor E-Core Information

is item displays the E-Core Information.

Processor P-Core Information

is item displays the P-Core Information.

English

Intel Hyper Threading Technology

Intel Hyper reading Technology allows multiple threads to run on each core, so

that the overall performance on threaded soware is improved.

Active Processor P-Cores

Select the number of cores to enable in each processor package.

Active Processor E-Cores

Select the number of E-Cores to enable in each processor package.

CPU C States Support

Enable CPU C States Support for power saving. It is recommended to keep C6 and

C7 enabled for better power saving.

Enhanced Halt State (C1E)

Enable Enhanced Halt State (C1E) for lower power consumption.

CPU C6 State Support

Enable C6 deep sleep state for lower power consumption.

CPU C7 State Support

Enable C7 deep sleep state for lower power consumption.

Package C State Support

Enable CPU, PCIe, Memory, Graphics C State Support for power saving.

CFG Lock

is item allows you to disable or enable the CFG Lock.

C6DRAM

Enable/Disable moving of DRAM contents to PRM memory when CPU is in C6

state.

CPU Thermal Throttling

Enable CPU internal thermal control mechanisms to keep the CPU from overheat-

ing.

Intel AV X /AV X2

Enable/Disable the Intel AVX and AVX2 Instructions. is is applicable for Big

Core only.

B660M-ITX/ac

Intel AVX-512

Enable/Disable the Intel AVX-512 (a.k.a. AVX3) Instructions. is is applicable for

Big Core only.

Intel Virtualization Technology

Intel Virtualization Technology allows a platform to run multiple operating systems

and applications in independent partitions, so that one computer system can

function as multiple virtual systems.

Hardware Prefetcher

Automatically prefetch data and code for the processor. Enable for better

performance.

Adjacent Cache Line Prefetch

Automatically prefetch the subsequent cache line while retrieving the currently

requested cache line. Enable for better performance.

English

Legacy Game Compatibility Mode

When enabled, pressing the scroll lock key will toggle the Ecient cores between

being parked when Scroll Lock LED is on and un-parked when LED is o.

English

4.6.2 Chipset Conguration

Primary Graphics Adapter

Select a primary VGA.

B660M-ITX/ac

Above 4G Decoding

Enable or disable 64bit capable Devices to be decoded in Above 4G Address Space

(only if the system supports 64 bit PCI decoding).

C.A.M (Clever Access Memory)

If system has Resizable BAR capable PCIe Devices, use this option to enable or

disable Resizable BAR support (only of the system supports 64-bit PCI decoding).

VT-d

Intel® Virtualization Technology for Directed I/O helps your virtual machine

monitor better utilize hardware by improving application compatibility and

reliability, and providing additional levels of manageability, security, isolation, and

I/O performance.

SR-IOV Support

If system has SR-IOV capable PCIe Devices, this option Enables or Disables Single

Root IO Virtualization Support.

DMI Link Speed

Congure DMI Slot Link Speed. Auto mode is optimizing for overclocking.

English

PCIE1 Link Speed

Select the link speed for PCIE1.

PCI Express Native Control

Select Enable for enhanced PCI Express power saving in OS.

PCIE ASPM Support

is option enables/disables the ASPM support for all CPU downstream devices.

PCH PCIE ASPM Support

is option enables/disables the ASPM support for all PCH PCIE devices.

DMI ASPM Support

is option enables/disables the control of ASPM on CPU side of the DMI Link.

PCH DMI ASPM Support

is option enables/disables the ASPM support for all PCH DMI devices.

Share Memory

Congure the size of memory that is allocated to the integrated graphics processor when

the system boots up.

IGPU Multi-Monitor

English

Select disable to disable the integrated graphics when an external graphics card is installed.

Select enable to keep the integrated graphics enabled at all times.

Inte(R) Ethernet Connection I219-V

Enable or disable the onboard network interface controller.

Onboard HD Audio

Enable/disable onboard HD audio. Set to Auto to enable onboard HD audio and

automatically disable it when a sound card is installed.

Front Panel

Enable/disable front panel HD audio.

Onboard HDMI HD Audio

Enable audio for the onboard digital outputs.

Onboard WAN Device

Use this item to enable or disable the onboard WAN device.

Deep Sleep

Congure deep sleep mode for power saving when the computer is shut down.

Restore on AC/Power Loss

Select the power state aer a power failure. If [Power O] is selected, the power will

remain o when the power recovers. If [Power On] is selected, the system will start

to boot up when the power recovers.

Restore Onboard LED Default

Restore Onboard LED default va lue.

RGB LED

is option enables/disables the RGB LED.

B660M-ITX/ac

English

4.6.3 Storage Conguration

SATA Controller(s)

Enable/disable the SATA controllers.

SATA Mode Selection

AHCI: Supports new features that improve performance.

English

Hybrid Storage Detection and Conguration Mode

is item allows you to select Hybrid Storage Detection and Conguration Mode.

SATA Aggressive Link Power Management

SATA Aggressive Link Power Management allows SATA devices to enter a low

power state during periods of inactivity to save power. It is only supported by AHCI

mode.

Hard Disk S.M.A.R.T.

S.M.A.R.T stands for Self-Monitoring, Analysis, and Reporting Technolog y. It is a

monitoring system for computer hard disk drives to detect and report on various

indicators of reliability.

VMD Conguration

is item allows you to enable or disable the Intel VMD support function.

4.6.4 Super IO Conguration

PS2 Y- Cable

Enable the PS2 Y-Cable or set this option to Auto.

B660M-ITX/ac

English

4.6.5 ACPI Conguration

Suspend to RAM

Select disable for ACPI suspend type S1. It is recommended to select auto for ACPI

S3 power saving.

PS/2 Keyboard S4/S5 Wakeup Support

Allow the system to be waked up by a PS/2 Keyboard in S4/S5.

English

PCIE Devices Power On

Allow the system to be waked up by a PCIE device and enable wake on LAN.

I219 LAN Power On

Allow the system to be waked up by the Onboard Intel LAN.

RTC Alarm Power On

Allow the system to be waked up by the rea l time clock alarm. Set it to By OS to let

it be handled by your operating system.

USB Keyboard/Remote Power On

Allow the system to be waked up by an USB keyboard or remote controller.

USB Mouse Power On

Allow the system to be waked up by an USB mouse.

4.6.6 USB Conguration

Legacy USB Support

Enable Legacy OS Support for USB devices. UEFI setup Only option will keep USB

devices available only for EFI applications.

B660M-ITX/ac

XHCI Hand-o

is is a workaround for OSes without XHCI hand-o support. e XHCI

ownership change should be claimed by XHCI driver.

English

4.6.7 Trusted Computing

NOTE: Options var y depending on the version of your connected TPM module.

Security Device Support

Use this item to enable or disable BIOS support for security device. O.S. will not

show Security Device. TCG EFI protocol and INT1A interface will not be available.

Active PCR banks

is item displays active PCR Banks.

English

Available PCR Banks

is item displays available PCR Banks.

SHA256 PCR Bank

Use this item to enable or disable SHA256 PCR Bank.

SHA384 PCR Bank

Use this item to enable or disable SHA384 PCR Bank.

SM3_256 PCR Bank

Use this item to enable or disable SM3_256 PCR Bank.

Pending Operation

Schedule an Operation for the Security Device.

NOTE: Your computer will reboot during restart in order to change State of the

Device.

Platform Hierarchy

Use this item to enable or disable Platform Hierarchy.

Storage Hierarchy

Use this item to enable or disable Storage Hierarchy.

Endorsement Hierarchy

Use this item to enable or disable Endorsement Hierarchy.

Physical Presence Spec version

Select this item to tell OS to support PPI spec version 1.2 or 1.3. Please note that

some HCK tests might not support version 1.3.

TPM 2.0 InterfaceType

Select the Communication Interface to TPM 2.0 Device

Device Select

Use this item to select the TPM device to be supported. TPM 1.2 will restrict

support to TPM 1.2 devices. TPM 2.0 will restrict support to TPM 2.0 devices. Auto

will support both with the default set to TPM 2.0 devices. If TPM 2.0 devices are

not found, TPM 1.2 devices will be enumerated.

B660M-ITX/ac

Disable Block Sid

Override to allow SID authentication in TCG Storage device.

English

4.7 Tools

ASRock Polychrome RGB

Select LED lighting color.

UEFI Tech Service

Contact ASRock Tech Service if you are having trouble with your PC. Please setup

network conguration before using UEFI Tech Service.

English

Easy RAID Installer

Easy R AID Installer helps you to copy the R AID driver from the support CD to

your USB storage device. Aer copying the drivers please change the SATA mode to

RAID, then you can start installing the operating system in RAID mode.

SSD Secure Erase Tool

All the SSD's listed that supports Secure Erase function.

NVME Sanitization Tool

Aer you Sanitize SSD, all user data will be permanently destroyed on the SSD and

cannot be recovered.

Instant Flash

Save UEFI les in your USB storage device and run Instant Flash to update your

UEFI.

Internet Flash - DHCP (Auto IP), Auto

ASRock Internet Flash downloads and updates the latest UEFI rmware version

from our servers for you. Please setup network conguration before using Internet

Flash.

*For BIOS backup and recovery purpose, it is recommended to plug in your USB

pen drive before using this function.

Network Conguration

Use this to congure internet connection settings for Internet Flash.

B660M-ITX/ac

Internet Setting

Enable or disable sound eects in the setup utility.

UEFI Download Server

Select a server to download the UEFI rmware.

English

4.8 Hardware Health Event Monitoring Screen

is section allows you to monitor the status of the hardware on your system,

including the parameters of the CPU temperature, motherboard temperature, fan

speed and voltage.

Fan Tuning

Measure Fan Min Duty Cycle.

English

Fan-Tastic Tuning

Select a fan mode for CPU Fan, or choose Customize to set 5 CPU temperatures and

assign a respective fan speed for each temperature.

CPU Fan 1 Setting

Select a fan mode for CPU Fan 1, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

CPU Fan 1 Step Up

Set the value of CPU Fan 1 Step Up.

CPU Fan 1 Step Down

Set the value of CPU Fan 1 Step Down.

CHA_FAN1 / W_PUMP Switch

Select Chassis Fan 1 or Water Pump mode.

B660M-ITX/ac

Chassis Fan 1 Control Mode

Select PWM mode or DC mode for Chassis Fan 1.

Chassis Fan 1 Setting

Select a fan mode for Chassis Fan 1, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 1 Temp Source

Select a fan temperature source for Chassis Fan 1.

Chassis Fan 1 Step Up

Set the value of Chassis Fan 1 Step Up.

Chassis Fan 1 Step Down

Set the value of Chassis Fan 1 Step Down.

Chassis Fan 2 Setting

Select a fan mode for Chassis Fan 2, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 2 Temp Source

Select a fan temperature source for Chassis Fan 2.

Chassis Fan 2 Step Up

Set the value of Chassis Fan 2 Step Up.

Chassis Fan 2 Step Down

Set the value of Chassis Fan 2 Step Down.

English

4.9 Security Screen

In this section you may set or change the supervisor/user password for the system.

You may also clear the user password.

Supervisor Password

Set or change the password for the administrator account. Only the administrator

has authority to change the settings in the UEFI Setup Utility. Leave it blank and

press enter to remove the password.

English

User Password

Set or change the password for the user account. Users are unable to change the

settings in the UEFI Setup Utility. Leave it blank and press enter to remove the

password.

Secure Boot

Use this item to enable or disable support for Secure Boot.

Intel(R) Platform Trust Technology

Enable/disable Intel PTT in ME. Disable this option to use discrete TPM Module.

B660M-ITX/ac

4.10 Boot Screen

is section displays the available devices on your system for you to congure the

boot settings and the boot priority.

Fast Boot

Fast Boot minimizes your computer's boot time. In fast mode you may not boot

from an USB storage device. e VBIOS must support UEFI GOP if you are using

an external graphics card. Please notice that Ultra Fast mode will boot so fast that

the only way to enter this UEFI Setup Utility is to Clear CMOS or run the Restart to

UEFI utility in Windows.

Boot From Onboard LAN

Allow the system to be waked up by the onboard LAN.

Setup Prompt Timeout

Congure the number of seconds to wait for the setup hot key.

Bootup Num-Lock

Select whether Num Lock should be turned on or o when the system boots up.

Boot Beep

Select whether the Boot Beep should be turned on or o when the system boots up. Please

note that a buzzer is needed.

English

Full Screen Logo

Enable to display the boot logo or disable to show normal POST messages.

AddOn ROM Display

Enable AddOn ROM Display to see the AddOn ROM messages or congure the

AddOn ROM if you've enabled Full Screen Logo. Disable for faster boot speed.

Boot Failure Guard Message

If the computer fails to boot for a number of times the system automatically restores

the default settings.

CSM (Compatibility Support Module)

English

CSM

Enable to launch the Compatibility Support Module. Please do not disable unless

you’re running a WHCK test.

Launch PXE OpROM Policy

Select UEFI only to run those that support UEFI option ROM only. Select Legacy

only to run those that support legacy option ROM only. Select Do not launch to not

execute both legacy and UEFI option ROM.

Launch Storage OpROM Policy

Select UEFI only to run those that support UEFI option ROM only. Select Legacy

only to run those that support legacy option ROM only. Select Do not launch to not

execute both legacy and UEFI option ROM.

Other PCI Device ROM Priority

For PCI devices other than Network. Mass storage or Video denes which OpROM

to launch.

B660M-ITX/ac

English

4.11 Exit Screen

Save Changes and Exit

When you select this option the following message, “Save conguration changes

and exit setup?” will pop out. Select [OK] to save changes and exit the UEFI SETUP

UTILITY.

Discard Changes and Exit

When you select this option the following message, “Discard changes and exit

setup?” will pop out. Select [OK] to exit the UEFI SETUP UTILITY without saving

any changes.

English

Discard Changes

When you select this option the following message, “Discard changes?” will pop

out. Select [OK] to discard all changes.

Load UEFI Defaults

Load UEFI default values for a ll options. e F9 key can be used for this operation.

Launch EFI Shell from lesystem device

Copy shellx64.e to the root directory to launch EFI Shell.

Contact Information

If you need to contact ASRock or want to know more about ASRock, you’re welcome

to visit ASRock’s website at http://ww w.asrock.com; or you may contact your dealer

for further information. For technical questions, please submit a support request

form at https://event.asrock.com/tsd.asp

ASRock Incorporation

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District,

Taipei City 112, Taiwan (R.O.C.)

ASRock EUROPE B.V.

Bijsterhuizen 11-11

6546 AR Nijmegen

e Netherlands

Phone: +31-24-345-44-33

Fax: +31-24-345-44-38

ASRock America, Inc.

13848 Magnolia Ave, Chino, CA91710

U.S.A.

Phone: +1-909-590-8308

Fax: +1-909-590-1026

DECLARATION OF CONFORMITY

Responsible Party Name:

Phone/FaxNo:

hereby declares that the product

Product Name : Motherboard

Per FCC Part 2 Section 2.1077(a)

ASRock Incorporation

Address:

13848 Magnolia Ave, Chino, CA91710

+1-909-590-8308/+1-909-590-1026

Model Number :

Conforms to the following specications:

FCC Part 15, Subpart B, Unintentional Radiators

Supplementary Information:

B660M-ITX/ac

is device complies with part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) is device may not cause harmful interference,

and (2) this device must accept any interference received, including interference

that may cause undesired operation.

James

Representative Person’s Name:

Signature :

Date :

May 12, 2017

EU Declaration of Conformity

Radio Equipment Directive - 2014/53/EU

For the following equipment:

Motherboard

(Product Name)

B660M-ITX/ac / ASRock

(Model Designation / Trade Name)

ASRock Incorporation

(Manufacturer Name)

2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District, Taipei City 112, Taiwan (R.O.C.)

(Manufacturer Address)

■ EN 300 328 V2.2.2

■ EN 301 893 V2.1.1

□ EN 300 330 V2.1.1

EMC Directive - 2014/30/EU

■ EN 301 489-1 V2.2.3

■ EN 301 489-17 V3.2.4 □ EN 301 489-3 V2.1.1

■ EN 55032:2015/A11:2020

■ EN 61000-3-2:2014

■ EN 61000-3-3:2013

Low Voltage Directive - 2014/35/EU

□ EN 62368-1:2014 □ EN 62311:2008 □ EN 62368-1:2014/A11:2017

RoHS Directive - 2011/65/EU

■ (EU) 2015/863 ■ EN 50581:2012

CE marking

ASRock EUROPE B.V.

(Company Name)

Bijsterhuizen 1111 6546 AR Nijmegen e Netherlands

(Company Address)

Person responsible for making this declaration:

■ EN 55024:2010/A1:2015 □ EN 55035:2017/A11:2020

■ EN 61000-4-2:2009

■ EN 61000-4-3:2006/A1:2008/A2:2010

■ EN 61000-4-4:2012

■ EN 61000-4-5:2014/A1:2017

■ EN 61000-4-6:2014/AC:2015

■ EN 61000-4-8:2010

■ EN 61000-4-11:2004/A1:2017

(EU conformity marking)

(Name, Surname)

A.V.P

(Position / Title)

January 6, 2022

(Date)

P/N: 15G062340000AK V1.0

Asrock B660M-ITX/ac User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1 Introduction

1.1 Package Contents

1.3 Motherboard Layout

1.4 I/O Panel

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

Chapter 2 Installation

2.1 Installing the CPU

2.2 Installing the CPU Fan and Heatsink

2.3 Installing Memory Modules (DIMM)

2.4 Expansion Slot (PCI Express Slot)

2.5 Jumpers Setup

2.6 Onboard Headers and Connectors

2.7 M.2_SSD (NGFF) Module Installation Guide

Chapter 3 Software and Utilities Operation

3.1 Installing Drivers

3.2 ASRock Motherboard Utility (A-Tuning)

3.2.1 Installing ASRock Motherboard Utility (A-Tuning)

3.2.2 Using ASRock Motherboard Utility (A-Tuning)

3.3 ASRock Live Update & APP Shop

3.3.1 UI Overview

3.3.2 Apps

3.3.3 BIOS & Drivers

3.3.4 Setting

3.4 ASRock Polychrome SYNC

Chapter 4 UEFI SETUP UTILITY

4.1 Introduction

4.2 EZ Mode

4.3 Advanced Mode

4.3.1 UEFI Menu Bar

4.3.2 Navigation Keys

4.4 Main Screen

4.5 OC Tweaker Screen

4.6 Advanced Screen

4.6.7 Trusted Computing

4.7 Tools

4.8 Hardware Health Event Monitoring Screen

4.9 Security Screen

4.10 Boot Screen

4.11 Exit Screen