ASRock B450M Pro4 Service Manual

Version 1.0

Published June 2018

Copyright©2018 ASRock INC. All rights reserved.

Copyright Notice:

No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.

Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to

infringe.

Disclaimer:

Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.

In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.

is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that

may cause undesired operation.

CALIFORNIA, USA ONLY

e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”

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

AUSTRALIA ONLY

Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage caused by our goods. You are also entitled
to have the goods repaired or replaced if the goods fail to be of acceptable quality and the
failure does not amount to a major failure. If you require assistance please call ASRock Tel

: [phone] ext.123 (Standard International call charges apply)

e terms HDMI™ and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.

Contents

Chapter 1 Introduction 1

1.1 Package Contents 1

1.2 Specications 2

1.3 Motherboard Layout 7

1.4 I/O Panel 9

Chapter 2 Installation 11

2.1 Installing the CPU 12

2.2 Installing the CPU Fan and Heatsink 14

2.3 Installing Memory Modules (DIMM) 22

2.4 Expansion Slots (PCI Express Slots) 25

2.5 Jumpers Setup 26

2.6 Onboard Headers and Connectors 27

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide 32

2.7.1 Installing Two CrossFireXTM-Ready Graphics Cards 32

2.7.2 Driver Installation and Setup 34

2.8 M.2_SSD (NGFF) Module Installation Guide (M2_1) 35

2.9 M.2_SSD (NGFF) Module Installation Guide (M2_2) 38

Chapter 3 Software and Utilities Operation 41

3.1 Installing Drivers 41

3.2 A-Tuning 42

3.2.1 Installing A-Tuning 42

3.2.2 Using A-Tuning 42

3.3 ASRock Live Update & APP Shop 45

3.3.1 UI Overview 45

3.3.2 Apps 46

3.3.3 BIOS & Drivers 49

3.3.4 Setting 50

3.4 ASRock Polychrome RGB 51

Chapter 4 UEFI SETUP UTILITY 54

4.1 Introduction 54

4.1.1 UEFI Menu Bar 54

4.1.2 Navigation Keys 55

4.2 Main Screen 56

4.3 OC Tweaker Screen 57

4.4 Advanced Screen 59

4.4.1 CPU Conguration 60

4.4.2 North Bridge Conguration 61

4.4.3 South Bridge Conguration 62

4.4.4 Storage Conguration 63

4.4.5 Super IO Conguration 64

4.4.6 ACPI Conguration 65

4.4.7 Trusted Computing 66

4.4.8 AMD CBS 67

4.4.9 AMD PBS 75

4.5 Tools 76

4.6 Hardware Health Event Monitoring Screen 78

4.7 Security Screen 81

4.8 Boot Screen 82

4.9 Exit Screen 84

Chapter 1 Introduction

ank you for purchasing ASRock B450M Pro4 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 manual, 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 manual will be subject to change without notice. In ca se any modica­tions of this manual occur, the updated version will be available on ASRock’s website
without further notice. If you require technical suppor t related to this motherboard,
please visit our website for spe cic information about the model you are using. You
may nd the l atest VGA cards and CPU support list on ASRock ’s website a s well.
ASRock website http://www.a srock .com.

1.1 Package Contents

ASRock B450M Pro4 Motherboard (Micro ATX Form Factor)

•

ASRock B450M Pro4 Quick Installation Guide

•

ASRock B450M Pro4 Support CD

•

1 x I/O Panel Shield

•

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

•

2 x Screws for M.2 Sockets (Optional)

•

B450M Pro4

English

1

1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

•

•

•

•

•

•

•

•

•

* For Ryzen Series CPUs (Raven Ridge), ECC is only supported

with PRO CPUs.

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

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

* Please refer to page 22 for DDR4 UDIMM maximum

frequency support.

•

•

Micro ATX Form Factor

Solid Capacitor design

AMD AM4 Socket

Digi Power design

9 Power Phase design

Supports 105W Water Cooling (Pinnacle Ridge); Supports

95W Water Cooling (Summit Ridge); Supports 65W Water

Cooling (Raven Ridge)

AMD Promontory B450

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4

3200+(OC)/2933/2667/2400/2133 ECC & non-ECC, un-

buered memory*

AMD Ryzen series CPUs (Summit Ridge) support DDR4

3200+(OC)/2933(OC)/2667/2400/2133 ECC & non-ECC, un-

buered memory*

AMD Ryzen series CPUs (Raven Ridge) support DDR4

3200+(OC)/2933(OC)/2667/2400/2133 non-ECC, un-buered

memory*

Max. capacity of system memory: 64GB

15μ Gold Contact in DIMM Slots

English

2

Expansion
Slot

AMD Ryzen series CPUs (Summit Ridge and Pinnacle Ridge)

1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode)*

•

1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)

•

AMD Ryzen series CPUs (Raven Ridge)

1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)*

•

1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)

•

Graphics

* Supports NVMe SSD as boot disks

1 x PCI Express 2.0 x1 Slot

•

Supports AMD Quad CrossFireXTM and CrossFireX

•

Integrated AMD RadeonTM Vega Series Graphics in Ryzen

•

Series APU*

* Actual support may vary by CPU

DirectX 12, Pixel Shader 5.0

•

Max. shared memory 2GB

•

ree graphics output options: D-Sub, DVI-D and HDMI

•

Supports Triple Monitor

•

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

•

(4096x2160) @ 24Hz / (3840x2160) @ 30Hz

Supports DVI-D with ma x. resolution up to 1920x1200 @

•

60Hz

Supports D-Sub with max. resolution up to 1920x1200 @

•

60Hz

Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and

•

HBR (High Bit Rate Audio) with HDMI Port (Compliant

HDMI monitor is required)

Supports HDCP with DVI-D and HDMI Ports

•

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

•

B450M Pro4

TM

Audio

LAN

7.1 CH HD Audio with Content Protection (Realtek ALC892

•

Audio Codec)

* To congure 7.1 CH HD Audio, it is required to use an HD

front panel audio module and enable the multi-channel audio

feature through the audio driver.

Premium Blu-ray Audio support

•

Supports Surge Protection

•

ELNA Audio Caps

•

PCIE x1 Gigabit LAN 10/100/1000 Mb/s

•

Realtek RTL8111H

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

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3

Rear Panel
I/O

Storage

1 x PS/2 Mouse/Keyboard Port

•

1 x D-Sub Port

•

1 x DVI-D Port

•

1 x HDMI Port

•

2 x USB 2.0 Ports (Supports ESD Protection)

•

1 x USB 3.1 Gen2 Type-A Port (10 Gb/s) (Supports ESD Pro-

•

tection)

1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (Supports ESD Pro-

•

tection)

4 x USB 3.1 Gen1 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, support RAID (RAID 0,

•

RAID 1 and RAID 10), NCQ, AHCI and Hot Plug*

* M2_ 2 and SATA3_3 share lanes. If either one of them is in use,

the other one will be disabled.

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

•

2242/2260/2280 M.2 PCI Express module up to Gen3 x4

(32 Gb/s) (with Summit Ridge, Raven Ridge and Pinnacle

Ridge)**

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

•

2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module**

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

English

4

Connector

1 x COM Port Header

•

1 x TPM Header

•

1 x Chassis Intrusion Header

•

1 x Power LED and Speaker Header

•

1 x RGB LED Header

•

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

1 x Addressable LED Header

•

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

1 x AMD Fan LED Header

•

* e AMD Fan LED Header supports LED strips of maximum

load of 3A (36W) and length up to 2.5M.

1 x CPU Fan Connector (4-pin)

•

* e CPU Fan Connector supports the CPU fan of ma ximum

1A (12W) fan power.

BIOS
Feature

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

•

Speed Control)

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

maximum 2A (24W) fan power.

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

•

Speed Control)

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

maximum 2A (24W) fan power.

* CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and

CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

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

•

Protection)

1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports)

•

(Supports ESD Protection)

AMI UEFI Legal BIOS with multilingual GUI support

•

Supports “Plug and Play”

•

ACPI 5.1 compliance wake up events

•

Supports jumperfree

•

SMBIOS 2.3 support

•

DRAM Voltage multi-adjustment

•

B450M Pro4

Hardware
Monitor

OS

Certica­tions

Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa-

•

ter Pump Fans

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

•

Pump Fans

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

•

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

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

•

Water Pump Fans

CASE OPEN detection

•

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

•

Microso® Windows® 10 64-bit

•

FCC, CE

•

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

•

English

5

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

Please realize that the re is a certain r isk involved with overclo cking, including adju st­ing the setting in the BIOS, applying Untied Ove rclocking Technology, or using third­party o verclocking tools. Overclocking may aect your system’s stability, or even c ause
damage to the components and dev ices of your system. It should be done at your own
risk and expense. We are not responsible for possible damage cau sed by overclocking.

English

6

1.3 Motherboard Layout

ATXP WR 1

Sup er

I/O

CLRCMOS1

1

PCI E2

HD_AUDI O1

1

CPU_FAN2 /WP

Top:

LINE IN

Center :

FRONT

Bottom :

MIC IN

RJ- 45 L AN

SOC KE T AM 4

USB 3 .1 Ge n2

1

COM1

CMOS

Batt ery

ATX12V1

M2_1

Ultr a M .2

PCIe G en3 x4

USB3_5 6

1

CHA_FAN1/ WP

HDLED R ESET

PLED PWRBTN

PANEL1

1

RoH S

SPK_PLED 1

1

DDR4 _A1 (64 bit, 288 -pin mod ule)

DDR4 _A2 (64 bit, 288 -pin mod ule)

DDR4 _B1 (64 bit, 288 -pin mod ule)

DDR4 _B2 (64 bit, 288 -pin mod ule)

PCI E1

PCI E3

M2_2

M2_2_CT 2M2_2_CT 3M2 _2_CT4 M2_2_ CT1

AMD

Prom ont ory

B450

USB 3.1 G en1
T:U SB3
B: USB4

AMD_FAN_LE D1

1

M2_1_CT 3M2_1_CT 2M2 _1_CT1

1

USB_5_6

TPMS1

1

SATA3_3

SATA3_4

SATA3_1

SATA3_2

21

B4 50 M P ro 4

USB 3.1 G en1
T:U SB1
B: USB2

USB 3.1 Gen 2
T:US B31_TA_ 1
B: USB31_ TC_1

HDM I1

DVI1

VGA1

USB 2. 0
T: USB1
B: USB 2

PS2

Keyb oard /

Mous e

CPU_FAN1

CI1

1

CHA_FAN2 /WP

CHA_FAN3 /WP

1

USB_3_4

RGB_HEADE R1

1

ADDR_LED1

1

24

1

B450M Pro4

5

4

3

2

6

7

BIOS
ROM

8

9

13

14

15

17

10

11

12

English

7

No. Description

1 ATX 12V Power Connector (ATX12V1)

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

3 CPU Fan Connector (CPU_FAN1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

5 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

6 AMD Fan LED Header (AMD_FAN_LED1)

7 ATX Power Connector (ATXPWR1)

8 USB 3.1 Gen1 Header (USB3_56)

9 SATA3 Connector (SATA3_3)

10 SATA3 Connector (SATA3_4)

11 SATA3 Connector (SATA3_2)

12 SATA3 Connector (SATA3_1)

13 System Panel Header (PANEL1)

14 Power LED and Speaker Header (SPK_PLED1)

15 Chassis Intrusion Header (CI1)

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

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

18 Clear CMOS Jumper (CLRCMOS1)

19 USB 2.0 Header (USB_5_6)

20 USB 2.0 Header (USB_3_4)

21 COM Port Header (COM1)

22 TPM Header (TPMS1)

23 RGB LED Header (RGB_HEADER1)

24 Addressable LED Header (ADDR_LED1)

25 Front Panel Audio Header (HD_AUDIO1)

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

English

8

1.4 I/O Panel

1

B450M Pro4

4

2

3

5

12

No. Description No. Description

1 USB 2.0 Ports (USB_1_2) 8 USB 3.1 Gen1 Ports (USB3_12)

2 D-Sub Port 9 USB 3.1 Gen2 Type-A Port (USB31_TA_1)

3 LAN RJ-45 Port* 10 USB 3.1 Gen2 Type-C Port (USB31_TC_1)

4 Line In (Light Blue)** 11 HDMI Port

5 Front Speaker (Lime)** 12 DVI-D Port

6 Microphone (Pink)** 13 PS/2 Mouse/Keyboard Port

7 USB 3.1 Gen1 Ports (USB3_34)

* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications .

ACT/LINK L ED

SPEED LE D

LAN Por t

Activity / Link LED Speed LED

Status Description Status Description

O No Link O 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection

1113

9

10

8 7

6

English

9

** To congure 7.1 CH HD Audio, it i s required to use an HD front panel audio module and enable the multi­channel audio feature through the audio driver.

Please set Speaker Conguration to “7.1 Speaker”in the Realtek HD Audio Manager.

Function of the Audio Por ts in 7.1-channel Con guration:

English

10

Port Function

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

Chapter 2 Installation

is is 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.

•

Failure to do so may cause physical injuries to you 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.

B450M Pro4

11

English

2.1 Installing the CPU

Unplug all power cables be fore installing the CPU.

1

English

12

2

B450M Pro4

3

13

English

2.2 Installing the CPU Fan and Heatsink

Aer you install the CPU into this motherboard, it is necessary to install a larger

heatsink and cooling fan to dissipate heat. You also need to spray thermal grease

between the CPU and the heatsink to improve heat dissipation. Ma ke sure that the

CPU and the heatsink are securely fastened and in good contact with each other.

Please turn o the power or remove the power cord before changing a CPU or heatsink.

Installing the CPU Box Cooler SR1

1

English

14

2

B450M Pro4

3

4

4-pin FAN cable

1

N

FA

_

U

P

C

English

15

Installing the AM4 Box Cooler SR2

1

2

English

16

B450M Pro4

3

17

English

4

4-pin FAN cable

1
N

FA

_

U

P

C

5

4-pin FAN cable

English

18

RGB LED Cable

1

N

FA

CPU_

1

D

E

L

_

N

FA

_

D

AM

+12V

*e diagram shown here are for reference only. Please refer to page 31 for the orientation of

AMD Fan LED Header (AMD_FAN_LED1).

Installing the AM4 Box Cooler SR3

1

B450M Pro4

2

English

19

3

4

English

20

B450M Pro4

5

4-pin FAN cable

CPU_FAN1

6

1
N

FA

_

U

P

C

USB 2.0 Header

B

S

U

Please note that this connector is the interface to the LED control board on the SR3, it requires the AMD

utility "SR3 Settings Soware" to control the LED.

*e diagram shown here are for reference only. Please refer to page 28 for the orientation of USB Header.

21

English

2.3 Installing Memory Modules (DIMM)

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

and supports Dual Channel Memory Technology.

1. For dual channel conguration, you always need to install identica l (the same

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

2. It is unable to activate Dual Channel Memor y Technology with only one or three
memor y module installed.

3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.

DDR4 UDIMM Maximum Frequency Support

Ryzen Series CPUs (Pinnacle Ridge):

English

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 2667

- DR - - 2400

- SR - SR 2667

- DR - DR 2400

SR SR SR SR 2133

SR/DR DR SR/DR DR 1866

Frequency

(Mhz)

22

Ryzen Series CPUs (Summit Ridge):

B450M Pro4

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 2667

- DR - - 2667

- SR - SR 2667

- DR - DR 2400-2667

SR SR SR SR 2133-2400

SR/DR DR SR/DR DR 1866-2133

Frequency

(Mhz)

Ryzen Series CPUs (Raven Ridge):

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 2933

- DR - - 2667

- SR - SR 2667

- DR - DR 2400

SR SR SR SR 2133

SR/DR DR SR/DR DR 1866

Frequency

(Mhz)

SR: Single rank DIMM, 1Rx4 or 1R x8 on DIMM module label

DR: Dua l ran k DIMM, 2Rx4 or 2R x8 on DIMM module label

English

23

e DIMM only ts in one correct orie ntation. It will cause permanent dam age to
the mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation .

1

2

English

24

3

2.4 Expansion Slots (PCI Express Slots)

ere are 3 PCI Express slots on the motherboard.

Before installing an ex pansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Plea se read the documentation of the
expan sion card and mak e necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

PCIE3 (PCIe 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

PCIe Slot Congurations

PCIE1 PCIE2 PCIE3

Ryzen Series CPUs (Pinnacle Ridge) x1 x16 x4

B450M Pro4

Ryzen Series CPUs (Summit Ridge) x1 x16 x4

Ryzen Series CPUs (Raven Ridge) x1 x8 x4

English

25

2.5 Jumpers Setup

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

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

“Open”.

English

Clear CMOS Jumper

(CLRCMOS1)

(see p.7, No. 18)

CLRCMOS1 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 CLRCMOS1 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.

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

2-pin Jumper

Short: Clear CMOS

Open: Default

26

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.

B450M Pro4

System Panel Header

(9-pin PANEL1)

(see p.7, No. 13)

PWRBTN (Power Switch):

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

RESET (Reset Switch):

Connec t to the reset switch on the chassi s front panel. 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 S3 sleep state.
e LED is o when the system i s in S4 sle ep 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 dr ive is reading or w riting data.

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

1

PLE D+

PLE D-

HDL ED-

HDL ED+

PWR BTN #

GND

RES ET#

GND

GND

Connect the power

switch, reset switch and

system status indicator on

the chassis to this header

according to the pin

assignments below. Note

the positive and negative

pins before connecting

the cables.

27

English

Power LED and Speaker

PLE D-

Header

(7-pin SPK_PLED1)

(see p.7, No. 14)

DUM MY
+5V

1

PLE D+

SPE AK ER

DUM MY

PLE D+

Please connect the

chassis power LED and

the chassis speaker to this

header.

Serial ATA3 Connectors

(SATA3_1:

see p.7, No. 12)

(SATA3_2:

see p.7, No. 11)

(SATA3_3:

see p.7, No. 9)

(SATA3_4:

see p.7, No. 10)

USB 2.0 Headers

(9-pin USB_3_4)

(see p.7, No. 20)

(9-pin USB_5_6)

(see p.7, No. 19)

USB 3.1 Gen1 Header

(19-pin USB3_56)

(see p.7 or 8, No. 8)

SATA3_3

SATA3_1

USB _PW R

1

USB _PW R

Vbus

IntA _PA_S SRX-

IntA _PA_S SRX+

IntA _PA_S STX-

IntA _PA_S STX+

IntA _PA_D -

IntA _PA_D +

ese four SATA3

connectors support SATA

SATA3_4

data cables for internal

storage devices with up to

6.0 Gb/s data transfer rate.

SATA3_2

* M2_ 2 and SATA3_3

share lanes. If either one

of them is in use, the other

one will be disabled.

ere are two headers

P-

P+

GND

DUM MY

on this motherboard.

Each USB 2.0 header can

support two ports.

GND

P+

P-

VbusVbus

IntA _PB_ SSRX -

IntA _PB_ SSRX +

GND

IntA _PB_ SSTX -

GND

IntA _PB_ SSTX +

GND

IntA _PB_ D-

GND

IntA _PB_ D+

Dumm y

1

ere is one header on

this motherboard. Each

USB 3.1 Gen1 header can

support two ports.

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28

Front Panel Audio Header

(9-pin HD_AUDIO1)

(see p.7, No. 25)

1

GND

PRE SEN CE#

MIC 2_R

MIC 2_L

MIC _RE T

J_S ENS E

OUT 2_R

OUT _RE T

OUT 2_L

is header is for

connecting audio devices

to the front audio panel.

GND

FAN_V OLTAGE _CO NTRO L

FAN_S PEE D

FAN_S PEE D_CO NTR OL

GND

FAN_V OLTAGE _CO NTRO L

FAN_S PEE D

FAN_S PEE D_CO NTR OL

GND

FAN_V OLTAGE _CO NTRO L

FAN_S PEE D

FAN_S PEE D_CO NTR OL

1. High Denition Audio supports Jack Sen sing, but the panel wire on the chas sis mu st
suppor t HDA to function correctly. Please follow the instructions in our manual and
chassis manual to install your syste m.

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 adju st “Recording Volume”.

B450M Pro4

Chassis/Water Pump Fan

Connectors

(4-pin CHA_FAN1/WP)

(see p.7, No. 26)

(4-pin CHA_FAN2/WP)

(see p.7, No. 16)

(4-pin CHA_FAN3/WP)

(see p.7, No. 17)

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.7, No. 3)

CPU/Water Pump Fan

Connector

(4-pin CPU_FAN2/WP)

(see p.7, No. 2)

FAN_ SP EED _CO NTR OL

FAN_ SP EED

FAN _VO LT AGE

GND

is motherboard

4
3

provides three 4-Pin water

2
1

cooling

chassis

connectors. If you plan to

connect a 3-Pin

water cooler fan, please

connect it to Pin 1-3.

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

provides a 4-Pin water

cooling CPU fan

connector. If you plan

to connect a 3-Pin CPU

water cooler fan, please

connect it to Pin 1-3.

fan

chassis

English

29

ATX Power Connector

1

(24-pin ATXPWR1)

(see p.7, No. 7)

12

24

is motherboard pro-

vides a 24-pin ATX power

connector. To use a 20-pin

ATX power supply, please

plug it along Pin 1 and Pin

1

13

13.

English

30

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.7, No. 1)

Serial Port Header

(9-pin COM1)

(see p.7, No. 21)

Chassis Intrusion Header

(2-pin CI1)

(see p.7, No. 15)

TPM Header

(17-pin TPMS1)

(see p.7, No. 22)

8

5

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.

1

RRX D1

DDT R#1

TTX D1

DDC D#1

1

Sig nal

DDS R#1

CCT S#1

RRTS #1

GND

GND

RRI #1

is COM1 header

supports a serial port

module.

is motherboard

supports CASE OPEN

detection feature that

detects if the chassis cove

has been removed. is

feature requires a chassis

with chassis intrusion

detection design.

is connector supports

GN D

LAD 0

LAD 3

+3 V

+3V S B

PC IRS T #

Trusted Platform Module

PC ICL K

FRA M E

(TPM) system, which can

1

securely store keys, digital

GN D

D

GN

GN D

LAD 1

SER IRQ #

LAD 2

S_P WRD WN #

SMB _DA TA_ MAI N

certicates, passwords,

and data. A TPM system

also helps enhance

SMB _CL K_M AIN

network securit y, protects

digital identities, and

ensures platform integrity.

B450M Pro4

AMD FAN LED Header

(4-pin AMD_FAN_

LED1)

(see p.7, No. 6)

RGB LED Header

(4-pin RGB_LED1)

(see p.7, No. 23)

Addressable LED Header

(3-pin ADDR_LED1)

(see p.7, No. 24)

1

12V G R B

1

12V G R B

1

DO_ ADD R

VOU T

GND

AMD FAN LED Header is used

to connect RGB LED

extension cable that comes with

AMD heatsink. e cable

connection allows users to choose

from various LED lighting

eects.

Caution: Never install the FAN

LED cable in the wrong orienta-

tion; otherwise, the cable may

be damaged.

is header is used to connect

RGB LED extension cable which

allows users to choose from vari-

ous LED lighting eects.

Caution: Never install the RGB

LED cable in the wrong orienta-

tion; otherwise, the cable may

be damaged.

*Please refer to page 51 for fur-

ther instructions on this header.

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 52 for fur-

ther instructions on this header.

31

English

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide

is motherboard supports CrossFireXTM and Quad CrossFireXTM that allows you

to install up to two identical PCI Express x16 graphics cards.

1. You should only use ide ntical CrossFireXTM-ready g raphics cards that are AM D
certied.

2. Make sure that your g raphics card driver supports AMD CrossFireXTM technology.
Download the drivers from the A MD’s website: www.amd.com

3. Make sure that your power supply unit (PSU) can provide at least th e minimum
power your syste m require s. It is recommended to use a AMD certied PSU. Plea se
refer to the AMD’s website for d etail s.

4. If you pair a 12-pipe CrossFireXTM Edition card with a 16-pipe card, both cards will
operate a s 12-pipe cards while in CrossFireXTM mode.

5. Dierent CrossFireXTM cards may require dierent method s to enable CrossFi­reXTM. Please refer to A MD graphics card manuals for de tailed installation guide.

2.7.1 Installing Two CrossFireXTM-Ready Graphics Cards

Step 1

Insert one graphics card into PCIE2 slot

and the other graphics card to PCIE3 slot.

Make sure that the cards are properly

seated on the slots.

English

32

CrossFire Bridge

Step 2

Connect two graphics cards by installing

a CrossFire Bridge on the CrossFire Bridge

Interconnects on the top of the graphics

cards. (e CrossFire Bridge is provided

with the graphics card you purchase, not

bundled with this motherboard. Please

refer to your graphics card vendor for

details.)

Step 3

Connect a VGA cable or a DVI cable to the

monitor connector or the DVI connec-

tor of the graphics card that is inserted to

PCIE2 slot.

B450M Pro4

33

English

2.7.2 Driver Installation and Setup

Step 1

Power on your computer and boot into OS.

Step 2

Remove the AMD drivers if you have any VGA drivers installed in your system.

e Catalyst Unins talle r is an optional download. We recommend using this utility
to uninstall any previously installed Catalyst drivers prior to installation. Pl ease
check A MD’s website for AMD driver update s.

Step 3

Install the required drivers and CATALYST Control Center then restart your

computer. Please check AMD’s website for details.

Step 4

Double-click the AMD Catalyst Control

AMD Catalyst Control Center

Center icon in the Windows® system tray.

Step 5

In the le pane, click Performance and

then AMD CrossFireXTM. en select

Enable AMD CrossFireX and click Apply.

Select the GPU number according to your

graphics card and click Apply.

English

34

B450M Pro4

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

The M.2, also known as the Next Generat ion Form Factor (NGFF), is a small size and

versatile card edge connector that aims to replace mPCIe and mSATA. The Ultra M.2

Socket (M2_1) supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3

x4 (32 Gb/s) (with Summit Ridge, Raven Ridge and Pinnacle Ridge).

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_SSD (NGFF) module

and the screw.

3

2

1

ABC

No. 1 2 3

Nut Location A B C

PCB Length 4.2cm 6cm 8cm

Module Type Type 2242 Type2260 Type 2280

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

location to be used.

35

English

Step 3

Move the stando based on the

module type and length.

ABC

e stando is placed at the nut

location C by default. Skip Step 3

and 4 and go straight to Step 5 if you

are going to use the default nut.

Otherwise, release the stando by

hand.

Step 4

Peel o the yellow protective lm on

the nut to be used. Hand tighten the

ABC

stando into the desired nut location

on the motherboard.

Step 5

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

English

36

ABC

o

20

Step 6

Tighten the screw with a screwdriver

to secure the module into place.

Please do not overtighten the screw

NUT1NUT2C

as this might damage the module.

M.2_SSD (NGFF) Module Support List

Vendor Interface P/N

SanDisk PCIe SanDisk-SD6PP4M-128G( Gen2 x2)
Intel PCIe INTEL 6000P-SSDPEKKF256G7 (nvme)
Intel PCIe INTEL 6000P-SSDPEKKF512G7 (nvme)
Kingston PCIe Kingston SHPM2280P2 / 240G (Gen2 x4)
Samsung PCIe Samsung XP941-MZHPU512HCGL(Gen2x4)
ADATA SATA ADATA - AXNS381E-128GM-B
Crucial SATA Crucial-CT240M500SSD4-240GB
ezlink SATA ezlink P51B-80-120GB
Intel SATA INTEL 540S-SSDSCKKW240H6-240GB
Kingston SATA Kingston SM2280S3G2/120G - Win8.1
Kingston SATA Kingston-RBU-SNS8400S3 / 180GD
LITEON SATA LITEON LJH-256V2G-256GB (2260)
PLEXTOR SATA PLEXTOR PX-128M6G-2260-128GB
PLEXTOR SATA PLEXTOR PX-128M7VG-128GB
SanDisk SATA SanDisk X400-SD8SN8U-128G
SanDisk SATA Sandisk Z400s-SD8SNAT-128G-1122
SanDisk SATA SanDisk-SD6SN1M-128G
Transcend SATA Transcend TS256GMTS800-256GB
V-Color SATA V-Color 120G
V-Color SATA V-Color 240G
WD SATA WD GREEN WDS240G1G0B-00RC30

B450M Pro4

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

for details: http://www.asrock.com

English

37

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

5

The M.2, also known as the Next Generat ion Form Factor (NGFF), is a small size and

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

(M2_2) supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module.

* M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be

disabled.

Installing the M.2_SSD (NGFF) Module

Step 1

Prepare a M.2_SSD (NGFF) module

and the screw.

English

4

3

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

2

1

location to be used.

No. 1 2 3 4

Nut Location A B C D

PCB Length 3cm 4.2cm 6cm 8cm

Module Type Type2230 Type 2242 Ty pe2260 Type 2280

38

B450M Pro4

Step 3

Move the stando based on the

A

BCD

A

BCD

module type and length.

e stando is placed at the nut

location D by default. Skip Step 3 and

4 and go straight to Step 5 if you are

going to use the default nut.

Otherwise, release the stando by

hand.

Step 4

Peel o the yellow protective lm on

the nut to be used. Hand tighten the

stando into the desired nut location

on the motherboard.

Step 5

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 6

Tighten the screw with a screwdriver

NUT1NUT2D

to secure the module into place.

Please do not overtighten the screw as

this might damage the module.

English

39

M.2_SSD (NGFF) Module Support List

Vendor Interface P/N

ADATA SATA ADATA - AXNS381E-128GM-B
Crucial SATA Crucial-CT240M500SSD4-240GB
EZLINK SATA EZLINK P51B-80-120GB
Intel SATA INTEL 540S-SSDSCKKW240H6-240GB
Kingston SATA Kingston-RBU-SNS8400S3 / 180GD
Kingston SATA Kingston SM2280S3G2/120G - Win8.1
LITEON SATA LITEON LJH-256V2G-256GB (2260)
PLEXTOR SATA PLEXTOR PX-128M7VG-128GB
PLEXTOR SATA PLEXTOR PX-128M6G-2260-128GB
SanDisk SATA SanDisk-SD6SN1M-128G
SanDisk SATA SanDisk X400-SD8SN8U-128G
SanDisk SATA Sandisk Z400s-SD8SNAT-128G-1122
Transcend SATA Transcend TS256GMTS800-256GB
Transcend SATA Transcend TS64GMTS400-64GB
V-Color SATA V-Color 120G
V-Color SATA V-Color 240G
WD SATA WD BLUE WDS100T1B0B-00AS40
WD SATA WD GREEN WDS240G1G0B-00RC30

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

for details: http://www.asrock.com

English

40

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.

B450M Pro4

41

English

3.2 A-Tuning

A-Tuning is ASRock’s multi purpose soware suite with a new interface, more new

features and improved utilities.

3.2.1 Installing A-Tuning

A-Tuning can be downloaded from ASRock Live Update & APP Shop. Aer the

installation, you will nd the icon “A-Tuning“ on your desktop. Double-click the “A-

Tuning“ icon, A-Tuning main menu will pop up.

3.2.2 Using A-Tuning

ere are ve sections in 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

42

OC Tweaker

Congurations for overclocking the system.

B450M Pro4

System Info

View information about the system.

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

English

43

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 A-Tuning. Click to select "Auto run at Windows Startup" if you

want A-Tuning to be launched when you start up the Windows operating system.

English

44

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

B450M Pro4

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.

English

45

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.

English

46

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.

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.

B450M Pro4

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

English

47

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

48

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.

B450M Pro4

Step 1

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

Step 2

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

Step 3

Click Update to start the update process.

English

49

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

50

B450M Pro4

B450 M Pr o4

3.4 ASRock Polychrome RGB

ASRock Polychrome RGB is a lighting control utility specically designed for unique individuals

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

ing 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 strips to the

motherboard.

RGB LED Header (RGB_HEADER1)

1

B

R

G

V

2

1

on the

RGB_HEADER1

1

12V G R B

1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, 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 do not come with the package.

2. e RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a
maximum power rating of 3A (12V) and length within 2 meters.

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51

Connecting the Addressable RGB LED Strip

B450 M Pr o4

Connect your Addressable RGB LED strip to the Addressable LED Header (ADDR_LED1) on

the motherboard.

1

ADDR_LED1

1

GND

DO_ ADD R

VOU T

1. Never in stall the RGB LED cable in the w rong orientation; otherwi se, 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.

English

52

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

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 RGB Utility

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

B450M Pro4

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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.

4.1.1 UEFI Menu Bar

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

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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

4.1.2 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

B450M Pro4

+ / -

<Tab>

<PGUP>

<PGDN>

<HOME>

<END>

<F1>

<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

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

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4.2 Main Screen

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

display the system overview.

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4.3 OC Tweaker Screen

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

B450M Pro4

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.

CPU Conguration

OC Mode Change Switch

Select a setting for OC Mode.

Overclock Mode

Select the overclock mode.

CPU Frequency and Voltage Change

If this item is set to [Manual], the multiplier and voltage will be set based on user selection.

Final result is depending on the CPU's capability.

SMT Mode

is item can be used to disable symmetric multithreading. To re-enable SMT, a

power cycle is needed aer selecting [Auto].

Warning: S3 is not supported on systems where SMT is disabled.

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DRAM Timing Conguration

DRAM Frequency

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

and assign the appropriate frequency automatically.

AM4 Advance Boot Training

Set TR4 Advance boot training to [Auto] to increase compatibility.

Voltage Conguration

CPU SOC Voltage

Congure the voltage for the CPU SOC.

Vcore Oset Voltage

Use this to select Vcore Oset Voltage.

Vcore NB Oset Voltage

Use this to select Vcore NB Oset Voltage.

DRAM Voltage

Use this to select DRAM Voltage. e default value is [Auto].

1.8 Voltage

Use this to select 1.8 Voltage. e default value is [Auto].

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VDDP

Congure the voltage for the VDDP.

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.

4.4 Advanced Screen

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

Conguration, North Bridge Conguration, South Bridge Conguration, Storage-

Conguration, Super IO Conguration, ACPI Conguration, Trusted Computing ,

AMD CBS and AMD PBS.

B450M Pro4

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

UEFI Conguration

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.

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4.4.1 CPU Conguration

Cool 'n' Quiet

Use this item to enable or disable AMD’s Cool ‘n’ QuietTM technology. e default value is

[Enabled]. Conguration options: [Enabled] and [Disabled]. If you install Windows® OS and

want to enable this function, please set this item to [Enabled]. Please note that enabling this

function may reduce CPU voltage and memory frequency, and lead to system stability or

compatibility issue with some memory modules or power supplies. Please set this item to

[Disable] if above issue occurs.

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AMD fTPM Switch

Use this to enable or disable AMD CPU fTPM.

SVM Mode

When this option is set to [Enabled], a VMM (Virtual Machine Architecture) can

utilize the additional hardware capabilities provided by AMD-V. e default value is

[Enabled]. Conguration options: [Enabled] and [Disabled].

4.4.2 North Bridge Conguration

SR-IOV Support

Enable/disable the SR-IOV (Single Root IO Virtualization Support) if the system

has SR-IOV capable PCIe devices.

B450M Pro4

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4.4.3 South Bridge Conguration

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.

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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.

4.4.4 Storage Conguration

SATA Controller(s)

Enable/disable the SATA controllers.

B450M Pro4

SATA Mode

AHCI: Supports new features that improve performance.

RAID: Combine multiple disk drives into a logical unit.

SATA Hot Plug

Enable/disable the SATA Hot Plug function.

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4.4.5 Super IO Conguration

Serial Port

Enable or disable the Serial port.

Serial Port Address

Select the address of the Serial port.

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4.4.6 ACPI Conguration

Suspend to RAM

It is recommended to select auto for ACPI S3 power saving.

B450M Pro4

ACPI HPET Table

Enable the High Precision Event Timer for better performance and to pass WHQL

tests.

PS/2 Keyboard Power On

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

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 rea l time clock alarm. Set it to By OS to let

it be handled by your operating system.

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4.4.7 Trusted Computing

Security Device Support

Enable to activate Trusted Platform Module (TPM) security for your hard disk

drives.

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4.4.8 AMD CBS

Zen Common Options

RedirectForReturnDis

B450M Pro4

From a workaround for GCC/C000005 issue for XV Core on CZ A0, setting MSRC001_1029

Decode Conguration (DE_CFG) bit 14 [DecfgNoRdrctForReturns] to 1.

L2 TLB Associativity

0 - L2 TLB ways [11:8] are fully associative. 1 - =L2 TLB ways [11:8] are 4K-only.

Platform rst Error Handling

Enable/disable PFEH, cloak individual banks, and mask deferred error interrupts from each

bank.

Core Performance Boost

Disable CPB.

Enable IBS

Enables IBS through MSRC001_1005[42] and disables SpecLockMap through

MSRC001_1020[54].

Global C-state Control

Controls IO based C-state generation and DF C-states.

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Opcache Control

Enables or disables the Opcache.

OC Mode

OC1 - 16 cores/3.6GHz on 1.3375V

OC2 - 8 cores/3.7GHz on 1.369V

OC3 - 4 cores/3.75GHz on 1.374V\nMax Stress - 16 cores/3.8GHz on 1.400V

SEV-ES ASID Space Limit

SEV VMs using ASIDs below the SEV-ES ASID Space Limit must enable the SEV-ES feature.

e valid values for this eld are from 0x1 (1) - 0x10 (16).

Core/Thread Enablement

Downcore control

Sets the number of cores to be used. Once this option has been used to remove any cores, a

POWER CYCLE is required in order for future selections to take eect.

SMTEN

is item can be used to disable symmetric multithreading. To re-enable SMT, a POWER

CYCLE is needed aer selecting the 'Auto' option.

Warning: S3 is NOT SUPPORTED on systems where SMT is disabled.

Streaming Stores Control

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Enables or disables the streaming stores functionality.

DF Common Options

DRAM scrub time

Provide a value that is the number of hours to scrub memory.

Redirect scrubber control

Control DF::RedirScrubCtrl[EnRedirScrub]

Disable DF sync ood propagation

Control DF::PIECong[DisSyncFloodProp].

Freeze DF module queues on error

Controls DF::PIECong[DisImmSyncFloodOnFatalError]

Disabling this option sets DF:PIECong[DisImmSyncFloodOnFatalError].

B450M Pro4

GMI encryption control

GMI encryption control

Control GMI link encryption

xGMI encryption control

Control xGMI link encryption

CC6 memory region encryption

Control whether or not the CC6 save/restore memory is encry pted

Location of private memory regions

Controls whether or not the private memory regions (PSP, SMU and CC6) are at the top of

DRAM or distributed. Note that distributed requires memory on all dies. Note that it will

always be at the top of DRAM if some dies don't have memory regardless of this option's

setting.

System probe lter

Controls whether or not the probe lter is enabled. Has no eect on parts where the probe

lter is fuse disabled.

Memory interleaving

Controls fabric level memory interleaving (AUTO, none, channel, die, socket). Note that

channel, die, and socket has requirements on memory populations and it will be ignored if

the memory doesn't support the selected option.

Memory interleaving size

Controls the memory interleaving size. e valid values are AUTO, 256 bytes, 512 bytes, 1

Kbytes or 2Kby tes. is determines the starting address of the interleave (bit 8, 9, 10 or 11).

Channel interleaving hash

Controls whether or not the address bits are hashed during channel interleave mode. is

eld should not be used unless the interleaving is set to channel and the interleaving size is

256 or 512 bytes.

Memory Clear

When this feature is disabled, BIOS does not implement MemClear aer memory training

(only if non-ECC DIMMs are used).

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UMC Common Options

DDR4 Common Options

DRAM Controller Conguration

DRAM Controller Conguration

DRAM Power Options

Cmd2T

Select between 1T and 2T mode on ADDR/CMD

Gear Down Mode

Congure the Gear Down Mode.

CAD Bus Conguration

CAD Bus Timing User Controls

Setup time on CAD bus signals to Auto or Manual

CAD Bus Drive Strength User Controls

Drive Strength on CAD bus signals to Auto or Manual

Data Bus Conguration

Data Bus Conguration User Controls

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Specif y the mode for drive strength to Auto or Manual

Common RAS

Data Poisoning

Enable/disable data poisoning: UMC_CH::EccCtrl[UcFatalEn] UMC_

CH::EccCtrl[WrEccEn]

Should be enabled/disabled together.

Security

TSME

Transparent SME: AddrTweakEn = 1; ForceEncrEn =1; DataEncrEn = 0

Data Scramble

Data scrambling: DataScrambleEn

DRAM Memory Mapping

Chipselect Interleaving

Interleave memory blocks across the DRAM chip selects for node 0.

BankGroupSwap

Congure the BankGroupSwap.

BankGroupSwapAlt

Congure BankGroupSwapAlt.

Address Hash Bank

Congure the bank address hashing.

Address Hash CS

Congure the CS address hashing.

NVDIMM

Memory MBIST

MBIST Enable

B450M Pro4

Congure the Memory MBIST.

MBIST SubType Test

Select MBIST Subtest - Single Chipselect, Multi Chipselect, Address Line Test or execute

All test

MBIST Aggressors

Enable or disable MBIST Aggressor test.

MBIST Per Bit Slave Die Reporting

Enable or disable MBIST per bit slave die result report.

NBIO Common Options

NB Conguration

IOMMU

Use this to enable or disable IOMMU. e default value of this feature is [Disabled].

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Determinism Slider

[Auto]

Use default performance determinism settings

cTDP Control

[Auto]

Use the fused cTDP.

[Manual]

User can set customized cTDP.

Fan Control

[Auto]

Use the default fan controller settings.

[Manual]

User can set customized fan controller settings.

PSI

Disable PSI.

ACS Enable

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Enable ACS.

PCIe ARI Support

Enables Alternative Routing-ID Interpretation

CLDO_VDDP Control

[Manual]

If this option is selected, user can set customized CLDO_VDDP voltage.

HD Audio Enable

Enable HD Audio.

FCH Common Options

SATA Conguration Options

SATA Controller

Disable or enable OnChip SATA controller

Sata RAS Support

Disable or enable Sata RAS Support

Sata Disabled AHCI Prefetch Function

Congure the Sata Disabled AHCI Prefetch function.

Aggresive SATA Device Sleep Port 0

Congure the Aggresive SATA Device Sleep Port 0.

Aggresive SATA Device Sleep Port 1

Congure the Aggresive SATA Device Sleep Port 1.

USB Conguration Options

XHCI controller enable

Congure the USB3 controller.

SD (Secure Digital) Options

B450M Pro4

SD Conguration Mode

Select SD Mode.

Ac Power Loss Options

Select Ac Loss Control Method.

I2C Conguration Options

Uart Conguration Options

ESPI Conguration Options

XGBE Conguration Options

eMMC Options

NTB Common Options

DRAM Memory Mapping

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Chipselect Interleaving

Interleave memory blocks across the DRAM chip selects for node 0.

BankGroupSwap

Congure the BankGroupSwap.

BankGroupSwapAlt

Congure the BankGroupSwapAlt.

Address Hash Bank

Congure the bank address hashing.

Address Hash CS

Congure the CS address hashing.

NVDIMM

Memory MBIST

MBIST Enable

Congure the Memory MBIST.

MBIST SubType Test

Select MBIST Subtest - Single Chipselect, Multi Chipselect, Address Line Test or execute

all test.

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MBIST Aggressors

Congure the MBIST Aggressor test.

MBIST Per Bit Slave Die Reporting

Congure the MBIST per bit slave die result report.

4.4.9 AMD PBS

e AMD PBS menu accesses AMD specic features.

B450M Pro4

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4.5 Tools

RGB LED

ASRock Polychrome RGB allows you to adjust the RGB LED color to your liking.

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.

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Easy Driver Installer

For users that don’t have an optical disk drive to install the drivers from our support

CD, Easy Driver Installer is a handy tool in the UEFI that installs the LAN driver

to your system via an USB storage device, then downloads and installs the other

required drivers automatically.

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.

B450M Pro4

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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4.6 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.

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Fan-Tastic Tuning

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_FAN1 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_FAN1 Temp Source

Select a fan temperature source for CPU Fan 1.

CPU_FAN2/WP Switch

Select CPU Water Pump mode.

CPU Fan 2 Control Mode

Select PWM mode or DC 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.

CHA_FAN1/WP 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.

CHA_FAN2/WP Switch

Select Chassis Fan 2 or Water Pump mode.

B450M Pro4

Chassis Fan 2 Control Mode

Select PWM mode or DC mode for Chassis Fan 2.

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.

CHA_FAN3/WP Switch

Select Chassis Fan 3 or Water Pump mode.

Chassis Fan 3 Control Mode

Select PWM mode or DC mode for Chassis Fan 3.

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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

Select a fan temperature source for Chassis Fan 3.

Case Open Feature

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

removed.

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4.7 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.

B450M Pro4

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

Enable to support Secure Boot.

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4.8 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.

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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.

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.

CSM (Compatibility Support Module)

B450M Pro4

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.

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4.9 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.

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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: [phone]

Fax: [phone]

ASRock America, Inc.

13848 Magnolia Ave, Chino, CA91710

U.S.A.

Phone: [phone]

Fax: [phone]

DECLARATION OF CONFORMITY

Responsible Party Name:

Phone/Fax No:

hereby declares that the product

Product Name : Motherboard

Per FCC Part 2 Section 2.1077(a)

ASRock Incorporation

Address:

13848 Magnolia Ave, Chino, CA91710

[phone]/[phone]

Model Number :

Conforms to the following specications:

FCC Part 15, Subpart B, Unintentional Radiators

Supplementary Information:

B450M Pro4

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

EMC —Directive 2014/30/EU (from April 20th, 2016)

☐

For the following equipment:

Motherboard

(Product Name)

B450M Pro4 / 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)

ڛ

☐ EN 55022:2010/AC:2011 Class B EN 55024:2010/A1:2015

ڛ EN 55032:2012+AC:2013 Class B ڛڛ EN 61000-3-3:2013
ڛ EN 61000-3-2:2014

☐

LVD —Directive 2014/35/EU (from April 20th, 2016)

EN 60950-1 : 2011+ A2: 2013 ☐

ڛ RoHS — Directive 2011/65/EU
ڛ CE marking

EN 60950-1 : 2006/A12: 2011

(EU conformity marking)

ASRock EUROPE B.V.

(Company Name)

Bijsterhuizen 1111 6546 AR Nijmegen e Netherlands

(Company Address)

Person responsible for making this declaration:

(Name, Surname)

A.V.P

(Position / Title)

July 6, 2018

(Date)

P/N: 15G062108000AK V1.0