ASRock B660M Steel Legend, LGA 1700, DDR4 Micro-ATX Manual [EN]

Version 1.0

Published December 2021

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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.

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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 batter y 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 www.dtsc.ca.gov/hazardouswaste/ perchlorate”

ASRock Website: http://www.asrock.com

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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 10

2.1 Installing the CPU 11

2.2 Installing the CPU Fan and Heatsink 14

2.3 Installing Memory Modules (DIMM) 15

2.4 Expansion Slots (PCIe Slots) 17

2.5 Jumpers Setup 18

2.6 Onboard Headers and Connectors 19

2.7 Smart Switch 24

2.8 Post Status Checker 25

2.9 M.2 WiFi/BT PCIe WiFi Module and Intel® CNVi (Integrated WiFi/BT) Installation Guide 26

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_1) 28

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_2) 31

Chapter 3 Software and Utilities Operation 34

3.1 Installing Drivers 34

3.2 ASRock Motherboard Utility (A-Tuning) 35

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 35

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 35

3.3 ASRock Live Update & APP Shop 38

3.3.1 UI Overview 38

3.3.2 Apps 39

3.3.3 BIOS & Drivers 42

3.3.4 Setting 43

3.4 Nahimic Audio 44

3.5 ASRock Polychrome SYNC 45

Chapter 4 UEFI SETUP UTILITY 48

4.1 Introduction 48

4.2 EZ Mode 49

4.3 Advanced Mode 50

4.3.1 UEFI Menu Bar 50

4.3.2 Navigation Keys 51

4.4 Main Screen 52

4.5 OC Tweaker Screen 53

4.6 Advanced Screen 68

4.6.1 CPU Conguration 69

4.6.2 Chipset Conguration 72

4.6.3 Storage Conguration 75

4.6.4 Super IO Conguration 77

4.6.5 ACPI Conguration 78

4.6.6 USB Conguration 79

4.6.7 Trusted Computing 80

4.7 Tools 82

4.8 Hardware Health Event Monitoring Screen 84

4.9 Security Screen 87

4.10 Boot Screen 88

4.11 Exit Screen 91

B660M Steel Legend

Chapter 1 Introduction

ank you for purchasing ASRock B660M Steel Legend motherboard, a reliable

motherboard produced under ASRock ’s consistently stringent quality control.

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

commitment to quality and endurance.

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

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

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

the BIOS setup.

Becau se the motherboard specication s and the BIOS soware might be upd ated, the content of this documentation will be subject to change without notice. In case any modications of this documentation occur, the updated version w ill be available on ASRock’s website without further notice. If you require technical support related to this motherboard, plea se visit our webs ite for specic information about the model you are using. You may nd the latest VGA cards and CPU support li st on ASRock’s website a s well. ASRock website http://www.asrock.com.

1.1 Package Contents

ASRock B660M Steel Legend Motherboard (Micro ATX Form Factor)

•

ASRock B660M Steel Legend Quick Installation Guide

•

ASRock B660M Steel Legend Support CD

•

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

•

3 x Screws for M.2 Sockets (Optiona l)

•

1 x Stando for M.2 Socket (Optiona l)

•

1 x I/O Panel Shield

•

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/)

•

Micro ATX Form Factor

2oz Copper PCB

Supports 12th Gen Intel® CoreTM Processors (LGA1700)

Digi Power design

9 Power Phase design

Supports Intel® Hybrid Technology

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

5000+(OC)*

Supports ECC UDIMM memory modules (operate in non-

ECC mo de)

Max. capacity of system memor y: 128GB

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

15μ Gold Contact in DIMM Slots

English

Expansion Slot

Graphics

1 x PCIe Gen5x16 Slot*

•

* Supports NVMe SSD as boot disks

2 x PCIe Gen3x1 Slots

•

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

•

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

15μ Gold Contact in VGA PCIe Slot (PCIE1)

•

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

B660M Steel Legend

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

•

Gold Audio Jacks

•

Nahimic Audio

•

2.5 Gigabit LAN 10/100/1000/2500 Mb/s

•

Dragon RTL8125BG

•

Supports Dragon 2.5G LAN Soware

•

- Smart Auto Adjust Bandwidth Control

- Visual User Friendly UI

- Visual Network Usage Statistics

- Optimized Default Setting for Game, Browser, and

Streaming Modes

- User Customized Priority Control

Suppor ts Wa ke- On -L AN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports UEFI PXE

•

Rear Panel I/O

3 x Antenna Mounting Points

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

1 x Optical SPDIF Out Port

•

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: Rear Speaker / Central / Bass / Line in /

•

Front Speaker / Microphone (Gold Audio Jacks)

English

Storage

RAID

Connector

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.

2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061

•

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

•

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

1 x Hyper M.2 Socket (M2_2, Key M), supports ty pe 2280

•

SATA3 6.0 Gb/s & PCIe Gen4 x4 (64 Gb/s) mode**

** Supports Intel® OptaneTM Technology (M2 _2 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 RAID 10 for SATA

•

storage devices

1 x SPI TPM Header

•

1 x Chassis Intrusion and Speaker Header

•

1 x RGB LED Header

•

* Supports in total up to 12V/3A, 36W LED Strip

3 x Addressable LED Headers

•

* Support in total up to 5V/3A, 15W LED Strip

1 x CPU Fan Connector (4-pin)

•

* e CPU Fan Connector supports the CPU fan of maxi-

•

mum 1A (12W) fan power.

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

•

Speed Control)

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

maximum 2A (24W) fan power.

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

•

Speed Control)

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

maximum 2A (24W) fan power.

* CPU_FAN2/WP, CHA_FAN1~3/WP can auto detect if 3-pin

or 4-pin fan is in use.

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

•

Connec tor)

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

•

Connec tor)

BIOS Feature

Hardware Monitor

B660M Steel Legend

1 x Front Panel Audio Connector

•

2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports

•

ESD Protection)

1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)

•

(Supports ESD Protection)

1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)

•

(Supports ESD Protection)

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

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

•

AUX, +1.05V PROC, +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, +1.05V_PCH, DRAM, VC-

•

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

+3.3V

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

Certications

* For detailed product infor mation, please vis it our website: http://www.asrock .com

Please realize that there is a certain risk involved with overcl ocking, including adjusting the setting in th e BIOS, applying Untie d Overclocking Technology, or using third-party overclocking tools . Overclocking may aect your system’s stability, or even cause damage to the components and devices of your system. It should be done at your own risk and expense. We are not responsible for possible damage caused by overclocking.

•

FCC, CE

•

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

•

English

1.3 Motherboard Layout

Intel

B660

ATXP WR1

HDLED RESET

PLED PWRBTN

PANEL1

CPU_FAN1

PCIE1

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

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

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

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

ATX12V1

USB3_5_ 6

CLRMOS1

HD_AUDIO1

Top: RJ-45

CHA_FAN1/WP

USB_5_6

PCIE2

USB 3.2 Gen1 T: USB3_4 B: USB3_3

USB2. 0

T: USB_1

B: USB _2

PS2

Keybo ard

/Mous e

ADDR_LED3

SPI_TPM_J1

ADDR_LED1

RGB_LED1

CHA_FAN3/WP

USB_3_4

CPU_FAN2/WP

SATA3_A1

USB 3.2 Gen1 T:

USB3_2

USB3_1

M2_2

M2_W IFI

M2_1

CMOS

Battery

SATA3_2

SATA3_3

F_USB 3_T C_1

SATA3_A2

BIOS

ROM

CHA_FAN2/WP

SPK_CI1

HDMI 1

LAN

AUDIO CODEC

DRAM

CPU

VGA

BOOT

ADDR_LED2

DP1

SATA3_0

SATA3_1

PCIE3

RoHS

Top:

Central/Bass

Center :

REAR SPK

Top:

LINE IN

Center :

FRONT

Bottom :

Optica l

SPDIF

Bottom :

MIC IN

BIOS _FLBK

English

No. Description

1 ATX 12V Power Connector (ATX12V1)

2 CPU Fan Connector (CPU_FAN1)

3 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

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 USB 3.2 Gen1 Header (USB3_5_6)

10 Front Panel Type C USB 3.2 Gen2x2 Header (F_USB3_TC_1)

11 SATA3 Connector (SATA3_0)(Upper)

12 SATA3 Connector (SATA3_1)(Lower)

13 SATA3 Connector (SATA3_3)(Lower)

14 SATA3 Connector (SATA3_2)(Upper)

15 System Panel Header (PANEL1)

16 Post Status Checker (PSC)

17 SATA3 Connector (SATA3_A1)

18 SATA3 Connector (SATA3_A2)

19 SPI TPM Header (SPI_TPM_ J1)

20 USB 2.0 Header (USB_5_6)

21 USB 2.0 Header (USB_3_4)

22 Chassis Intrusion and Speaker Header (SPK_CI1)

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

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

25 Clear CMOS Jumper (CLRMOS1)

26 RGB LED Header (RGB_LED1)

27 Addressable LED Header (ADDR_LED1)

28 Front Panel Audio Header (HD_AUDIO1)

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

B660M Steel Legend

English

1.4 I/O Panel

14 13

911

436

No. Description No. Description

1 USB 2.0 Ports (USB_12) 8 Optical SPDIF Out Port

2 2.5G LAN RJ-45 Port* 9 USB 3.2 Gen1 Ports (USB3_3_4)

3 Central / Bass (Orange) 10 USB 3.2 Gen1 Ports (USB3_1_2)

4 Rear Speaker (Black) 11 DisplayPort 1.4

5 Line In (Light Blue) 12 HDMI Port

6 Front Speaker (Lime)** 13 BIOS Flashback Button

7 Microphone (Pink) 14 PS/2 Mouse/Keyboard Port

*ere are two LEDs on each LA N port. Please re fer to the table below for the LAN port L ED indications.

ACT/LINK LED

SPEED LED

English

LAN Por t

Activity / Link LED Speed LED

Status Description Status Description

O No Link O 10Mbps connection

Blinking Data Activity Orange

100Mbps/1Gbps

connection

On Link Green 2.5Gbps connection

B660M Steel Legend

** If you use a 2- channel speaker, please connect the speaker’s plug into “Front Speaker Jack”. See the table below

for connection details in accordance with the type of s peaker you use.

Audio Output

Channels

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

Front Speaker

(No. 6)

Rear Speaker

(No. 4)

Central / Bass

(No. 3)

Line In

(No. 5)

English

Chapter 2 Installation

is is a Micro ATX form factor motherboard. Before you install the motherboard,

study the conguration of your chassis to ensure that the motherboard ts into it.

Pre-installation Precautions

Take note of the following precautions before you install motherboard components

or change any motherboard settings.

Make sure to unplug the power cord before installing or removing the motherboard

•

components. Failure to do so may cause physical injuries and damages to motherboard

components.

In order to avoid damage from static electricity to the motherboard’s components,

•

NEVER place your motherboard directly on a carpet. Also remember to use a grounded

wrist strap or touch a safety grounded object before you handle the components.

Hold components by the edges and do not touch the ICs.

•

Whenever you uninstall any components, place them on a grounded anti-static pad or

•

in the bag that comes with the components.

When placing screws to secure the motherboard to the chassis, please do not over-

•

tighten the screws! Doing so may damage the motherboard.

English

2.1 Installing the CPU

1. Before you insert the 1700-Pin CPU into the socket, please check if the PnP cap is on the socket, if the CPU surface is unclean, or if the re are any bent pins in the socket. Do not force to in sert the CPU into the socket if above situation is found. Otherwise, the CPU will be seriously damaged.

2. Unplug all power c ables before installing the CPU.

2 3

B660M Steel Legend

English

B660M Steel Legend

Please save and replace the cover if the processor is 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

English

CPU_FAN

B660M Steel Legend

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,

and supports Dual Channel Memory Technology.

1. For dual channe l conguration, you always nee d to insta ll identical (the same

brand, speed, size and chip-ty pe) DDR4 DIMM pairs.

2. It is unable to activate Dual Channel Me mory Technology with only one or three

memory module installed.

3. It is not allowed to in stall a DDR, DDR2 or DDR3 memory module into a DDR4

slot; otherwise, thi s motherboard and DIMM may be damaged.

Dual Channel Memory Conguration

Priority DDR4_A1 DDR4_A2 DDR4_B1 DDR4_B2

1 Populated Populated 2 Populated Populated Populated Populated

e DIMM only ts in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

English

2.4 Expansion Slots (PCIe Slots)

ere are 3 PCIe slots on the motherboard.

Before installing an expansion c ard, please mak e sure that the powe r supply is switched o or the power cord i s unplug ged. Please read the documentation of the expan sion card and mak e necessary hardware settings for the card before you star t the installation.

PCIe slots:

PCIE1 (PCIe 5.0 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 x1 slot) is used for PCIe x1 lane width cards.

B660M Steel Legend

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

(CLR MOS1)

(see p.6, No. 25)

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 CLRMOS1 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

English

If you clear the CMOS, the case open may be detected. Please adjus t the BIOS option “Clear Status” to cl ear the record of prev ious chassis intru sion status.

2.6 Onboard Headers and Connectors

+5V

DUMMY

SIGNAL

GND

DUMMY

SPEAKER

DUMMY

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

B660M Steel Legend

System Panel Header

(9-p in PA NE L1)

(see p.6, No. 15)

PWRBTN (Power Swi tch):

Connec t to the power switch on the chassis f ront panel. You may congure the way to turn o your system using the power sw itch.

RESET (Reset Sw itch): Connec t to the reset switch on the chassis f ront panel. Pre ss the reset switch to restart the computer if the computer f reezes and fails to per form a normal restart.

PLED (Syste m Power LED): Connec t to the power status indicator on the chassi s front panel. e LED is on when the system is operating. e LED keeps blinking whe n the system is in S1/S3 sle ep 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 f ront panel. e LED is on when the hard drive is reading or writing data.

e front panel design may dier by chassis . A front panel module mainly consists of power s witch, reset switch, power LED, hard drive ac tivity LED, speaker and etc. When connecting your cha ssis front panel modul e to this header, make sure the wire assig nments and the pin assignments are matched correc tly.

PLED+

PLED-

HDLED-

HDLED+

PWRBTN#

GND

RESET#

GND

Connect the power switch,

reset switch and system status

indicator on the chassis to

this header according to the

pin assignments below. Note

the positive and negative pins

before connecting the cables.

Chassis Intrusion and

Speaker Header

(7-pi n SPK_C I1)

(see p.6, No. 22)

Please connect the

chassis intrusion and the

chassis speaker to this header.

English

Serial ATA3 Connectors

ype-C Cable

DUMMY

GND

P+

P-

USB_PWR

P+

P-

USB_PWR

Right Angle:

(SATA3_0:

see p.6, No. 11)(Upp er)

(SATA3_1:

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

(SATA3_2:

see p.6, No. 14)(Upper)

(SATA3_3:

see p.6, No. 13)(Lower)

Ver ti ca l:

(SATA3_A1:

see p.6, No. 17)

(SATA3_A2:

see p.6, No. 18)

SATA3_0

SATA3_2

SATA3_1

SATA3_3

SATA3_A2 SATA3_A1

ese six SATA3 connectors

support SATA data cables for

internal storage devices with

up to 6.0 Gb/s data transfer

rate.

* If M2_2 is occupied by

a SATA-type M.2 device,

SATA3_0 will be disabled.

*To minimize the boot time,

use Intel® B660 SATA ports

(SATA3_0) for your SSDs.

English

USB 2.0 Headers

(9-pin USB_3_4)

(see p.6, No. 21)

(9-pin USB_5_6)

(see p.6, No. 20)

USB 3.2 Gen1 Header

(19-pin USB3_5_6)

(see p.6, No. 9)

Front Panel Type C USB

3.2 Gen2x2 Header

(20-pin F_USB3_TC_1)

(see p.6, No. 10)

Vbus

IntA_PA_SSRX-

IntA_PA_SSRX+

IntA_PA_SSTX-

IntA_PA_SSTX+

IntA_PA_D-

IntA_PA_D+

GND

USB T

VbusVbus

IntA_PB_SSRX-

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

IntA_PB_SSTX+

GND

IntA_PB_D-

IntA_PB_D+

Dummy

ere are two USB 2.0 headers

on this motherboard. Each

USB 2.0 header can support

two ports.

ere is one USB 3.2 Gen1

header on this motherboard.

is USB 3.2 Gen1 header can

support two ports.

ere is one Front Panel Type

C USB 3.2 Gen2x2 Header

on this motherboard. is

header is used for connecting

a USB 3.2 Gen2x2 module for

additional USB 3.2 Gen2x2

ports.

B660M Steel Legend

J_SENSE

OUT2_L

MIC_RET

PRESENCE#

GND

OUT2_R

MIC2_R

MIC2_L

OUT_RET

GND

AN_SPEED_CONTRO

GND

FAN_SPEED_CONTROL

Front Panel Audio Header

(9-pin HD_AUDIO1)

(see p.6, No. 28)

1. High De nition Audio supports Ja ck Sensing, but the panel wire on the chassi s

must support HDA to function corre ctly. Plea se follow the instructions in our manual and chas sis manual to install your system.

2. If you use an AC’97 audio panel, please install it to the front panel audio header by

the steps below: A. Connect Mic_ IN (MIC) to MIC2_ L. B. Conne ct Audio_R (RIN) to OUT2 _R and Audio_ L (LIN) to OUT2_ L. C. Connect Ground (GND) to Ground (GND). D. MIC_ RET and OUT_RET are for the HD audio panel only. You don’t 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”.

Chassis/Water Pump Fan

Connectors

(4-pin CHA_FAN1/WP)

(see p.6, No. 29)

(4-pin CHA_FAN2/WP)

(see p.6, No. 23)

(4-pin CHA_FAN3/WP)

(see p.6, No. 24)

2 3 4

1 2 3 4

FAN_VOLTAGE

CHA_FAN_SPEED

FAN_SPEED_CONTROL

FAN_VOLTAGE

CHA_FAN_SPEED

is header is for connecting

audio devices to the front

audio panel.

is motherboard

provides three 4-Pin water

cooling

chassis

fan

connectors. If you plan to

connect a 3-Pin

chassis

cooler fan, please connect it to

Pin 1-3.

water

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.6, No. 2)

CPU_FAN_SPEED

+12V

GND

1 2 3 4

is motherboard provides

a 4-Pin CPU fan (Quiet Fan)

connector. If you plan to con-

nect a 3-Pin CPU fan, please

connect it to Pin 1-3.

English

CPU/Water Pump Fan

4 3 2 1

8 5

SPI_DQ3

Connector

(4-pin CPU_FAN2/WP)

(see p.6, No. 5)

GND

FAN_VOLTAGE

CPU_F

AN_SPEED

FAN_SPEED_CONTROL

is motherboard

provides a 4-Pin water cool-

ing CPU fan connector. If you

plan to connect a 3-Pin CPU

water cooler fan, please con-

nect it to Pin 1-3.

English

ATX Power Connector

(24-pin AT XPWR 1)

(see p.6, No. 8)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.6, No. 1)

SPI TPM Header

(13 -pi n SPI_TPM _ J1)

(see p.6, No. 19)

4 1

SPI_PWR

Dummy

CLK

RSMRST#

SPI_MISO

SPI_CS0

SPI_DQ2

SPI_MOSI

RST#

TPM_PIRQ

SPI_TPM_CS

GND

is motherboard provides a

24-pin ATX power connector.

To use a 20-pin ATX power

supply, please plug it along

Pin 1 and Pin 13.

is motherboard provides

a 8-pin ATX 12V power con-

nector. 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

connec tor.

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

integr it y.

B660M Steel Legend

DO_ADDR

RGB LED Header

(4-pin RGB _LED1)

(see p.6, No. 26)

Addressable LED Headers

(3-pin ADDR _LED1)

(see p.6, No. 27)

(3-pin ADDR _LED2)

(see p.6, No. 7)

(3-pin ADDR _LED3)

(see p.6, No. 6)

+12V GRB

DO_ADDR

VOUT

GND

VOUT

GND

is RGB LED header is used to con-

nect 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 dam-

aged.

*Please refer to page 45 for further

instructions on this header.

ese three headers are used to con-

nect

Addressable

LED

extension cables which allow

users to choose from various LED

lighting eects.

Caution: Never install the Address-

able LED cable in the wrong orien-

tation; otherwise, the cable may be

damaged.

*Please refer to page 46 for

further instructions on this header.

English

2.7 Smart Switch

e motherboard has one smart switch: BIOS Flashback Button, allowing users to

ash the BIOS.

BIOS Flashback Button

(BIOS_FLBK)

BIOS Flashback Switch allows

users to ash the BIOS.

(see p.8, No. 13)

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

Before u sing the BIOS Flashback function, please suspend BitLocker and any encr yption or security rely ing on the TPM. Make sure that you have already stored and backup-ed the recovery key. If the recove ry key is missing while encry ption is active, the data will stay encrypted and the syste m will not boot into the operating system . It is recommended to disable f TPM before updating the BIOS. Otherw ise an unp redictable failure may occur.

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

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

2. Copy t he BIOS le to your USB ash d rive. 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 directory of X: USB ash drive.

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

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

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

8. Wait unti l the LED stops blinking, indicating that BIOS a shing has been completed. *If the LED light turns solid green, this means that the 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 from the system and remove/ disconnect the CMOS battery from the motherboard for several minutes. Reconnect power and battery and try again.

English

USB BIOS Flashback port

B660M Steel Legend

2.8 Post Status Checker

Post Status Checker (PSC) diagnoses the computer when users power on the

machine. It emits a red light to indicate whether the CPU, memory, VGA or stor-

age is dysfunctional. e lights go o if the four mentioned above are functioning

normal ly.

English

2.9 M.2 WiFi/BT PCIe WiFi Module and Intel® CNVi (Integrated WiFi/BT) 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 M.2 Socket (Key

E) supports type 2230 WiFi/BT PCIe WiFi module and Intel® CNVi (Integrated WiFi/BT).

* e M.2 socket does not support SATA M.2 SSDs.

Before you install Intel® Integrated Connectivity (CNVi) module, be sure to turn o the AC power.

Installing the WiFi/BT module or Intel® CNVi (Integrated WiFi/BT)

Step 1

Prepare a type 2230 WiFi/BT

PCIe WiFi module or Intel® CNVi

(Integrated WiFi/BT) and the screw.

Step 2

Find the nut location to be used.

English

PCB Length: 3cm Module Type: Type2230

B660M Steel Legend

Step 3

Gently insert the WiFi/BT PCIe WiFi

module or Intel® CNVi (Integrated

WiFi/BT) into the M.2 slot. Please be

aware that the 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

this might damage the module.

English

2.10 M.2_SSD (NGFF) Module Installation Guide (M2_1)

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

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_ SSD (NGFF) module

and the screw.

Step 2

English

SSD module, please loosen

the screws to remove the M.2

heatsink.

*Please remove the protective

lms on the bottom side of the

M.2 heatsink before you install

a M.2 SSD module.

Step 3

Before installing a M.2 (NGFF)

Depending on the PCB t ype and

length of your M.2 _SSD (NGFF)

module, nd the corresponding nut

ABC

location to be used.

No. 1 2 3

Nut Location A B C

PCB Length 4.2cm 6cm 8cm

Module Type Typ e2242 Type2 260 Ty pe 22 80

B660M Steel Legend

Step 4

Prepare the M.2 stando that comes

with the package. en hand tighten

the stando into the desired nut

ABC

location on the motherboard. 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.

ABC

Step 5

Tighten the screw that come with the

package with a screwdriver to secure

the module into place.

NUT1NUT2C

Step 6

Tighten the screw with a screwdriver

to secure the M.2 heatsink into place.

Please do not overtighten the screw

as this might damage the module

and M.2 heatsink.

English

M.2_SSD (NGFF) Module Support List (M2_1)

Vendor Interface P/N

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 Intel PCIe3 x4 SSDPEKKF256G7 Intel PCIe3 x4 SSDPEK KF512G7 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 PX-1TM8PeG Plextor PCIe3 x4 PX-256M8PeG Plextor PCIe3 x4 PX-512M8Pe G Plextor PCIe PX-G256M6e 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 (MZHPV512H DGL) Samsung PCIe3 x4 SM951 (NV ME) Samsung PCIe x4 XP941-512G (MZHPU512HCGL) SanDisk PCIe SD6PP4M-128G SanDisk PCIe SD6PP4M-256G TEAM PCIe3 x4 TM8FP2240G0C101 TEAM PCIe3 x4 TM8FP2480GC110 WD PCIe3 x4 WDS256G1X0C-00ENX0 (NVME) WD PCIe3 x4 WDS512G1X0C-0 0ENX0 (N VM E)

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

details: http://www.asrock.com

B660M Steel Legend

2.11 M.2_SSD (NGFF) Module Installation Guide (M2_2)

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_2, Key M) supports ty pe 2280 SATA3 6.0 Gb/s & PCIe Gen4 x4 (64 Gb/s)

mode.

* If M2_2 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 t ype and

length of your M.2 _SSD (NGFF)

module, nd the corresponding nut

location to be used.

No. 1

Nut Location A

PCB Length 8cm

Module Type Type2 280

English

Step 4

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 5

Tighten the screw with a screwdriver

to secure the module into place.

Please do not overtighten the screw

NUT1NUT2

as this might damage the module.

English

M.2_SSD (NGFF) Module Support List (M2_2)

Vendor Interface P/N

ADATA SATA3 AXNS330E-32GM-B ADATA SATA3 AXNS381E-128GM-B ADATA SATA3 AXNS381E-256GM-B ADATA SATA3 ASU800NS38-256GT-C ADATA SATA3 ASU800NS38-512GT-C Crucial SATA3 CT120M500SSD4 Crucial SATA3 CT240M500SSD4 Intel SATA3 Intel SSDSCKGW080A401/80G Kingston SATA3 SM2280S3 Plextor PCIe PX-G256M6e Plextor PCIe PX-G512M6e SanDisk PCIe SD 6PP4M-12 8G SanDisk PCIe SD6PP4M-256G Team SATA3 TM4PS4128GMC105 Team SATA3 TM4PS4256 GMC105 Team SATA3 TM8PS4128GMC105 Team SATA3 TM8PS 4256GMC105 Tra ns ce nd SATA3 TS256GMTS400 Tra ns ce nd SATA3 TS512GMTS600 Tra ns ce nd SATA3 TS512GMTS800 V-Co lor SATA 3 VLM100-120G-2280B-RD V-Co lor SATA 3 VLM10 0-240G-2280RGB V-Co lor SATA 3 VSM100-240G-2280 V-Co lor SATA 3 VLM10 0-240G-2280B-R D WD SATA3 WDS100T1B0B-00AS40 WD SATA3 WDS240G1G0B-00RC30

B660M Steel Legend

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 install it.

English

B660M Steel Legend

3.2 ASRock Motherboard Utility (A-Tuning)

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

(A-Tuning) 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.

English

OC Tweaker

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 Steel Legend

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 quickly and

easily install 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 dow nload apps from 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.

B660M Steel Legend

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.

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.

B660M Steel Legend

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.

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.

B660M Steel Legend

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.

English

3.4 Nahimic Audio

Nahimic audio soware provides an incredible high denition sound technology which

boosts the audio and voice performance of your system. Nahimic Audio interface is

composed of four tabs: Audio, Microphone, Sound Tracker and Settings.

ere are four functions in Nahimic audio :

No. Function Description

From this tab, you can mute the current audio device, choose

Audio

between four factory audio proles, turn all audio eects on/o, restores the current prole to its default settings and access Surround Sound and various features.

English

Microphone

Sound

Tracker

Settings

From this tab, you can mute the current mic device, choose between two factory mic proles, turn/o all microphone eects, restore the current prole to its default settings, and access Static Noise Suppression and various features.

e Sound Tracker provides a visual indication localizing the sources of the sounds while in a game. ese are represented by dynamic segments pointing the direction of the sounds: the more opaque they are, the stronger the sounds are.

From this tab, you can access all settings and information of the soware.

B660M Steel Legend

3.5 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 LED Strip

Connect your RGB LED strip to the

RGB LED Header (RGB_LED1)

RGB_LED1

+12V GRB

on the motherboard.

1. Never install the RGB LED cable in the w rong orientation; other wise, the cable

may be damaged.

2. Before installing or removing your RGB LED cable, plea se power o your system

and unplug the power cord from the power supply. Failure to do so may cause damages to motherboard components.

1. Plea se note that the RGB LED strips do not come with the package.

2. e RGB LED header support s standard 5050 RGB LED strip (12V/G/R/B), with a

maximum power rating of 3A (12V) and leng th within 2 meters.

English

Connecting the Addressable RGB LED Strip

DO_ADDR

GND

Connect your

ADDR_LED2 / ADDR _LED3)

ADDR_LED1

DO_ADDR

VOUT

Addressable RGB LED

strips to the

Addressable LED Headers (ADDR_LED1 /

on the motherboard.

ADDR_LED3

GND

VOUT

ADDR_LED2

VOUT

English

1. Never install the RGB LED cable in the w rong orientation; other wise, the cable may be damaged.

2. Before installing or removing your RGB LED cable, plea se power o your system and unplug the power cord from the power supply. Failure to do so may cause damages to motherboard components.

1. Plea se note that the RGB LED strips do not come with the package.

2. e RGB LED header support s WS2812B addressable RGB LED strip (5V/Data/

GND), with a ma ximum power rating of 3A (5V) and length within 2 meters.

B660M Steel Legend

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.

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, otherwise, 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 cons tantly being updated, the following UEFI setup screens and descriptions are for reference purpose only, and they may not e xactly match what you see on your screen.

English

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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

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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

+ / -

<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 set tings 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.

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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.

CPU Conguration

CPU Turbo Ratio Information

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

CPU Conguration

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.

English

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 Internal Bus Speed Ratio. e ma ximum 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 cur ves. is is ideal for

BCLK OC to avoid high voltage overrides.

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-

quenc y.

English

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 Overclock 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.

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Intel Turbo Boost Technology

Intel Turbo Boost Technolog y 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 Technolog y 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.

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.

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.

English

DRAM Conguration

Memory Information

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

(XMP) for DDR4 modules.

DRAM Timing Conguration

Load XMP Setting

Load XMP settings to overclock the memory and perform beyond standard

specications.

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.

Primary Timing

CAS# Latency (tCL)

English

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

in response.

RAS# to CAS# Delay (tRCD)

e number of clock cycles required between the opening of a row of memory and

accessing columns within it.

Row Precharge (tRP)

e number of clock cycles required between the issuing of the precharge command and

opening the next row.

RAS# Active Time (tRAS)

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

precharge command.

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Command Rate (CR)

e delay between when a memory 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.

CAS Write Latency (tCWL)

Congure CAS Write Latency.

English

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.

tRDRD_dd

Congure between module read to read delay.

English

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 Steel Legend

tWRWR_dd

Congure between module write to write delay.

TAT Runtime 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.

tRDRD_dd

Congure between module read to read delay.

tRDWR_sg

Congure between module read to write delay.

English

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.

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/A2)

Congure round trip latency initial value.

Initial RTL (MC0 C1 A1/A2)

Congure round trip latency initial value.

Initial RTL (MC1 C0 B1/B2)

Congure round trip latency initial value.

Initial RTL (MC1 C1 B1/B2)

Congure round trip latency initial value.

RTL (MC0 C0 A1/A2)

Congure round trip latency value.

RTL (MC0 C1 A1/A2)

Congure round trip latency value.

B660M Steel Legend

RTL (MC1 C0 B1/B2)

Congure round trip latency value.

RTL (MC1 C1 B1/B2)

Congure round trip latency value.

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 (A2)

Congure the memory on die termination resistors' WR for channel A2.

English

ODT WR (B1)

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

ODT WR (B2)

Congure the memory on die termination resistors' WR for channel B2.

ODT NOM (A1)

Use this to change ODT (CH A1) Auto/Manual settings. e default is [Auto].

ODT NOM (A2)

Use this to change ODT (CH A2) Auto/Manual settings. e default is [Auto].

ODT NOM (B1)

Use this to change ODT (CH B1) Auto/Manual settings. e default is [Auto].

ODT NOM (B2)

Use this to change ODT (CH B2) Auto/Manual settings. e default is [Auto].

ODT PARK (A1)

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

ODT PARK (A2)

Congure the memory on die termination resistors' PARK for channel A2.

English

ODT PARK (B1)

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

ODT PARK (B2)

Congure the memory on die termination resistors' PARK for channel B2.

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

Try Slowest MRC Training.

B660M Steel Legend

Realtime Memory Timing

Congure the realtime memory timings.

[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 heav y loading.

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 heavy load.

DRAM Voltage

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

VDD_IMC Voltage

Congure the VDD_IMC voltage.

English

VCCIN AUX Voltage

Congure the voltage for the VCCIN AUX.

+1.8V PROC Voltage

Congure the CPU voltage (1.8V).

+1.05V PROC Voltage

Congure the CPU voltage (1.05V).

+0.82V PCH Voltage

Congure the chipset voltage (0.82V).

+1.05V PCH Voltage

Congure the chipset voltage (1.05V).

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.

English

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.

B660M Steel Legend

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. Uses Mailbox 0SR 0x150, cmd 0x10,

0x11.

Extra Turbo Voltage

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

Uses Mailbox MSR 0x150, cmd 0x10, 0x11. Range 0-2000 mV.

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. Uses Mailbox MSR 0x150, cmd 0x11. Range -500 to 500 mV.

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. Uses Mailbox 0SR 0x150, cmd 0x10,

0x11.

Extra Turbo Voltage

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

Mailbox MSR 0x150, cmd 0x10, 0x11. Range 0-2000 mV.

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.

Ring Voltage Oset

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

millivolts. Uses Mailbox MSR 0x150, cmd 0x11. Range -500 to 500 mV.

English

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. Uses Mailbox 0SR 0x150, cmd 0x10,

0x11.

Extra Turbo Voltage

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

Mailbox MSR 0x150, cmd 0x10, 0x11. Range 0-2000 mV.

GT Voltage Oset

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

millivolts. Uses Mailbox MSR 0x150, cmd 0x11. Range -500 to 500 mV.

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

the voltage is interpolated only in turbo mode.

English

Extra Turbo Voltage

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

mode. Uses Mailbox MSR 0x150, cmd 0x10, 0x11. Range 0-2000 mV.

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.

B660M Steel Legend

English

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.

English

Setting wrong values in this section may cause the system to malf unction.

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.

4.6.1 CPU Conguration

Processor E-Core Information

is item displays the E-Core Information.

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Processor P-Core Information

is item displays the P-Core Information.

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 Ha lt State (C1E) for lower power consumption.

English

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, Memor y, 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 AVX/AVX2

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

Core only.

English

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.

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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.

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).

English

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.

B660M Steel Legend

DMI Link Speed

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

PCIE1 Link Speed

Select the link speed for PCIE1.

PCIE2 Link Speed

Select the link speed for PCIE2.

PCIE3 Link Speed

Select the link speed for PCIE3.

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

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.

Realtek RTL8125BG

Enable or disable the onboard network interface controller (Dragon RTL8125BG).

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.

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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 sav ing 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.

Turn On Onboard LED in S5

Turn on Onboard LED in the ACPI S5 state.

Restore Onboard LED Default

Restore Onboard LED default value.

RGB LED

is option enables/disables the RGB LED.

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4.6.3 Storage Conguration

SATA Controller(s)

Enable/disable the SATA controllers.

B660M Steel Legend

SATA Mode Selection

AHCI: Supports new features that improve performance.

Hybrid Storage Detection and Conguration Mode

is item allows you 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 Technology. It is a

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

indicators of reliability.

Third Party SATA 3 Controller

Enable or disable the third party SATA3 controller.

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Third Party SATA3 Hot Plug

Enable or disable the third party SATA3 controller.

VMD Conguration

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

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4.6.4 Super IO Conguration

PS2 Y-Cable

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

B660M Steel Legend

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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.

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PCIE Devices Power On

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

RTC Alarm Power On

Allow the system to be waked up by the real 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.

B660M Steel Legend

4.6.6 USB Conguration

Legacy USB Support

Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB

compatibility issues it is recommended to disable legacy USB support. Select UEFI

Setup Only to support USB devices under the UEFI setup and Windows/Linux

operating systems only.

XHCI Hand-o

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

ownership change should be claimed by XHCI driver.

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4.6.7 Trusted Computing

NOTE: Options var y depending on the ve rsion 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.

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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.

B660M Steel Legend

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 (CRB)

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.

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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.

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Easy RAID Installer

Easy R AID Installer helps you to copy the RAID 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 insta lling 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.

B660M Steel Legend

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.

Internet Setting

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

UEFI Download Server

Select a server to download the UEFI rmware.

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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 Dut y Cycle.

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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.

CPU_FAN2 / W_PUMP Switch

Switch CPU_FAN2 / W_PUMP header function.

B660M Steel Legend

CPU Fan 2 Control Mode

Select DC/PWM mode for CPU Fan 2.

CPU Fan 2 Setting

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

assign a respective fan speed for each temperature.

CPU Fan 2 Temp Source

Select a fan temperature source for CPU Fan 2.

CPU Fan 2 Step Up

Set the value of CPU Fan 2 Step Up.

CPU Fan 2 Step Down

Set the value of CPU Fan 2 Step Down.

CHA_FAN1 / W_PUMP Switch

Select Chassis Fan 1 or Water Pump mode.

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.

CHA_FAN2 / W_PUMP Switch

Select Chassis Fan 2 or Water Pump mode.

Chassis Fan 2 Control Mode

Select PWM mode or DC mode for Chassis Fan 2.

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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.

CHA_FAN3 / W_PUMP Switch

Select Chassis Fan 3 or Water Pump mode.

Chassis Fan 3 Control Mode

Select PWM mode or DC mode for Chassis Fan 3.

Chassis Fan 3 Setting

Select a fan mode for Chassis Fan 3, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

Chassis Fan 3 Temp Source

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Select a fan temperature source for Chassis Fan 3.

Chassis Fan 3 Step Up

Set the value of Chassis Fan 3 Step Up.

Chassis Fan 3 Step Down

Set the value of Chassis Fan 3 Step Down.

Case Open Feature

Enable or disable Case Open Feature to detect whether the chassis cover has been

removed.

B660M Steel Legend

4.9 Security Screen

In this section you may set or change the super visor/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.

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.

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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.

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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.

B660M Steel Legend

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)

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.

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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.

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B660M Steel Legend

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.

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 all 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.

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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://www.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

Per FCC Part 2 Section 2.1077(a)

Responsible Party Name: ASRock Incorporation

Address:

Phone/FaxNo:

hereby declares that the product

Product Name : Motherboard

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 Steel Legend

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

ASRock B660M Steel Legend, LGA 1700, DDR4 Micro-ATX Manual [EN]

Specifications and Main Features

Frequently Asked Questions

User Manual