ASRock B250 Pro4 Service Manual

Version 1.0

Published November 2016

Copyright©2016 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 15

2.3 Installing Memory Modules (DIMM) 16

2.4 Expansion Slots (PCI and PCI Express Slots) 18

2.5 Jumpers Setup 19

2.6 Onboard Headers and Connectors 20

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide 25

2.7.1 Installing Two CrossFireXTM-Ready Graphics Cards 25

2.7.2 Driver Installation and Setup 27

2.8 M.2_SSD (NGFF) Module Installation Guide 28

Chapter 3 Software and Utilities Operation 31

3.1 Installing Drivers 31

3.2 A-Tuning 32

3.2.1 Installing A-Tuning 32

3.2.2 Using A-Tuning 32

3.3 ASRock Live Update & APP Shop 35

3.3.1 UI Overview 35

3.3.2 Apps 36

3.3.3 BIOS & Drivers 39

3.3.4 Setting 40

3.4 Enabling USB Ports for Windows® 7 Installation 41

Chapter 4 UEFI SETUP UTILITY 44

4.1 Introduction 44

4.2 EZ Mode 45

4.3 Advanced Mode 46

4.3.1 UEFI Menu Bar 46

4.3.2 Navigation Keys 47

4.4 Main Screen 48

4.5 OC Tweaker Screen 49

4.6 Advanced Screen 56

4.6.1 CPU Conguration 57

4.6.2 Chipset Conguration 59

4.6.3 Storage Conguration 62

4.6.4 Intel® Thunderbolt 63

4.6.5 Super IO Conguration 64

4.6.6 ACPI Conguration 65

4.6.7 USB Conguration 67

4.6.8 Trusted Computing 68

4.7 Tools 69

4.8 Hardware Health Event Monitoring Screen 72

4.9 Security Screen 75

4.10 Boot Screen 76

4.11 Exit Screen 79

Chapter 1 Introduction

ank you for purchasing ASRock B250 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 documentation, Chapter 1 and 2 contains the introduction of the

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

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

the BIOS setup.

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

1.1 Package Contents

ASRock B250 Pro4 Motherboard (ATX Form Factor)

•

ASRock B250 Pro4 Quick Installation Guide

•

ASRock B250 Pro4 Support CD

•

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

•

1 x I/O Panel Shield

•

3 x Screws for M.2 Socket (Optional)

•

B250 Pro4

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1

1.2 Specications

Platform

CPU

Chipset

Memory

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•

•

•

•

•

•

•

* 7th Gen Intel® CPU supports DDR4 up to 2400; 6th Gen Intel®

CPU supports DDR4 up to 2133.

•

•

•

•

ATX Form Factor

Supports 7th and 6th Generation Intel® CoreTM i7/i5/i3/

Pentium®/Celeron® Processors (Socket 1151)

Digi Power design

8 Power Phase design

Supports Intel® Turbo Boost 2.0 Technology

Intel® B250

Dual Channel DDR4 Memory Technology

4 x DDR4 DIMM Slots

Supports DDR4 2400/2133 non-ECC, un-buered memory*

Supports ECC UDIMM memory modules (operate in non-

ECC mode)

Max. capacity of system memory: 64GB

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

15μ Gold Contact in DIMM Slots

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2

Expansion
Slot

2 x PCI Express 3.0 x16 Slots (PCIE2: x16 mode; PCIE4: x4

•

mode)*

* Supports NVMe SSD as boot disks

* If PCIE5 slot or PCI slot is occupied, PCIE4 slot will run at x2

mode.

3 x PCI Express 3.0 x1 Slots (Flexible PCIe)

•

1 x PCI Slot

•

Supports AMD Quad CrossFireXTM and CrossFireXTM

•

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

•

module**

** M.2 Socket (Key E) and PCIE3 slot share lanes. If either one

of them is in use, the other one will be disabled.

Graphics

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

•

can be supported only with processors which are GPU

integrated.

Supports Intel® HD Graphics Built-in Visuals : Intel® Quick

•

Sync Video with AVC, MVC (S3D) and MPEG-2 Full

HW Encode1, Intel® InTruTM 3D, Intel® Clear Video HD

Technology, Intel® InsiderTM, Intel® HD Graphics

Gen9 LP, DX11.3, DX12

•

HWAEncode/Decode: VP8, HEVC 8b, VP9, HEVC 10b (For

•

7th Gen Intel® CPU)

HWA Encode/Decode: VP8 , HEVC 8b; GPU/SWEncode/

•

Decode: VP9, HEVC 10b (For 6th Gen Intel® CPU)

Max. shared memory 1024MB

•

* e size of ma ximum shared memory may vary from dierent

operating systems.

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 Full HD 1080p Blu-ray (BD) playback with DVI-D

•

and HDMI Ports

B250 Pro4

Audio

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 (ASRock Full Spike Protection)

•

ELNA Audio Caps

•

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3

English

LAN

Rear Panel
I/O

Storage

Gigabit LAN 10/100/10 00 Mb/s

•

Giga PHY Intel® I219V

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection (ASRock Full Spike

•

Protection)

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x D-Sub Por t

•

1 x DVI-D Port

•

1 x HDMI Port

•

1 x USB 2.0 Port (Supports ESD Protection (ASRock Full

•

Spike Protection))

3 x USB 3.0 Type-A Ports (Supports ESD Protection (ASRock

•

Full Spike Protection))

1 x USB 3.0 Type-C Port (Supports ESD Protection (ASRock

•

Full Spike Protection))

1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED

•

LED)

HD Audio Jacks: Line in / Front Speaker / Microphone

•

6 x SATA3 6.0 Gb/s Connectors, support NCQ, AHCI and

•

Hot Plug*

* If M2_1 is occupied by a SATA-type M.2 device, SATA3_5 will

be disabled.

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

be disabled.

1 x Ultra M.2 Socket (M2_1), supports ty pe

•

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

PCI Express module up to Gen3 x4 (32 Gb/s)**

1 x M.2 Socket (M2_2), supports type 2230/2242/2260/2280

•

M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module

up to Gen3 x2 (16 Gb/s)**

** Supports Intel® OptaneTM Tech nolo gy

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

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 CPU Fan Connector (4-pin)

•

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

1A (12W) fan power.

2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Con-

•

trol)

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

•

(Smart Fan Speed Control)

* e Chassis Optional/Water Pump Fan supports the water

cooler fan of maximum 1.5A (18W) fan power.

* CHA_FAN2 can auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

1 x underbolt AIC Connector (5-pin)

•

1 x underbolt AIC Connector (10-pin)

•

* Only one underbolt AIC Card is supported.

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

•

ESD Protection (ASRock Full Spike Protection))

1 x USB 3.0 Header (Supports 2 USB 3.0 ports) (Supports

•

ESD Protection (ASRock Full Spike Protection))

B250 Pro4

BIOS
Feature

Hardware
Monitor

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

CPU, GT_CPU, DRAM, VPP, PCH 1.0V, VCCIO, VCCST,

•

VCCSA, VCCPLL Voltage Multi-adjustment

CPU / Chassis / Chassis Optional/Water Pump temperature

•

sensing

CPU / Chassis / Chassis Optional/Water Pump Fan Tachom-

•

eter

CPU / Chassis / Chassis Optional/Water Pump Quiet Fan

•

(Auto adjust chassis fan speed by CPU temperature)

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5

CPU / Chassis / Chassis Optional/Water Pump Fan multi-

•

speed control

CASE OPEN detection

•

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

•

VPP, PCH 1.0V, VCCIO, VCCSA, VCCST

Microso® Windows® 10 64-bit (For 7th Gen Intel® CPU)

OS

•

Microso® Windows® 10 64-bit / 8.1 64-bit / 7 32-bit / 7 64-

•

bit (For 6th Gen Intel® CPU)

* To install Windows® 7 OS, a modied installation disk with

xHCI drivers packed into the ISO le is required. Please refer to

page 41 for more detailed instructions.

* For the updated Windows® 10 driver, please visit ASRock ’s

website for details: http://ww w.asrock.com

FCC, CE, WHQL, RCM, BSMI

Certica­tions

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

Please realize that the re is a certain r isk involved with overclo cking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technol ogy, or using
third-party overclocking tool s. Overclocking may aect your system’s stability, or
even cause dam age to the components and devices of your system. It should be done
at your own risk and expense. We are not responsible for poss ible damage caused by
overclocking.

•

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

•

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6

1.3 Motherboard Layout

Intel

B250

DDR 4_A2 (6 4 bit, 28 8-pin m odule )

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

DDR 4_B2 (6 4 bit, 28 8-pin m odule )

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

ATX12V1

USB 3. 0

T: USB_1

B: USB _2

ATXP WR 1

PCIE2

Top:
RJ-45

PCIE4

HDLED RESET

PLED PWRBTN

PANEL1

1

USB_5_6

1

1

SPK_PLED1

COM1

1

1

HD_AUDIO1

B250 Pro4

PCIE1

RoHS

10

8

9

13

14

15

16

17

1819

22

1

4

3

20

Ultra M.2

PCIe Gen3 x4

PS2

Keybo ard

/Mous e

CMOS

Battery

PCIE3

24

12

6

USB3_ 3_4

1

21

CHA_FAN2

11

USB_3_4

1

23

1

TPMS1

M2_ 1

Ct3Ct2Ct1Ct4

7

Front USB 3.0

CHA_FAN3/W_PUMP

BIOS
ROM

Top:

LINE I N

Cent er:

FRON T

Bott om:

MIC IN

SATA_4

SATA_5

CHA_FAN1

CI1

1

25

26

PCI Express 3.0

SATA_2

SATA_3

SATA_0

SATA_1

CLRMOS1

1

CPU_FAN1

M2_ 3

NUT1

M2_ 2

Ct7Ct6Ct5Ct8

T 1

B

1

HDMI1

DVI 1

VGA 1

USB 3.0

USB3_ TC_1

T B2

1

5

2

PCIE5

PCI1

USB 3 .0

USB _2

USB 2 .0

USB _1

B250 Pro4

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7

No. Description

1 ATX 12V Power Connector (ATX12V1)

2 Chassis Fan Connector (CHA_FAN2)

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 Fan Connector (CPU_FAN1)

6 ATX Power Connector (ATXPWR1)

7 USB 3.0 Header (USB3_3_4)

8 SATA3 Connector (SATA3_5)

9 SATA3 Conne ctor (SATA3_ 4)

10 SATA3 Connector (SATA3_3)

11 SATA3 Connector (SATA3_2)

12 SATA3 Connector (SATA3_1)

13 SATA3 Connector (SATA3_0)

14 System Panel Header (PANEL1)

15 Power LED and Speaker Header (SPK_PLED1)

16 Chassis Fan / Waterpump Fan Connector (CHA_FAN3/W_PUMP)

17 Chassis Fan Connector (CHA_FAN1)

18 USB 2.0 Header (USB_ 3_4)

19 USB 2.0 Header (USB_5_6)

20 Clear CMOS Jumper (CLRMOS1)

21 Chassis Intrusion Header (CI1)

22 TPM Header (TPMS1)

23 COM Port Header (COM1)

24 Front Panel Audio Header (HD_AUDIO1)

25 underbolt AIC Connector (TB2)

26 underbolt AIC Header (TB1)

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1.4 I/O Panel

B250 Pro4

3

1

13

12

2

10

911 7

4

8

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 8 USB 3.0 Port (USB_2)

2 D-Sub Por t 9 USB 3.0 Type-C Port (USB3_TC_1)

3 LAN RJ-45 Port* 10 HDMI Port

4 USB 2.0 Port (USB_1) 11 DV I-D Por t

5 Line In (Light Blue)** 12 USB 3.0 Ports (USB3_1_2)

6 Front Speaker (Lime)** 13 Antenna Ports

7 Microphone (Pink)**

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

ACT/LINK LED

SPEED LED

5

6

LAN Por t

Activity / Link LED Speed LED

Status Description Status Description

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

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** 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 Ports in 7.1-channel Conguration:

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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 an ATX form factor motherboard. Before you install the motherboard, study

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

Pre-installation Precautions

Take note of the following precautions before you install motherboard components

or change any motherboard settings.

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

•

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

components.

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

•

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

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

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

•

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

•

in the bag that comes with the components.

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

•

tighten the screws! Doing so may damage the motherboard.

B250 Pro4

11

English

2.1 Installing the CPU

1. Before you insert the 1151-Pin CPU into the socke t, please check if the PnP cap
is on the socket, if the CPU sur face is unclean, or if th ere are any bent pins in the
socket. Do not force to insert the CPU into the socket if above situ ation is found.
Other wise, the CPU wil l be seriously d amaged.

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

1

2

A

B

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12

B250 Pro4

3

4

5

English

13

Please save and replace the cover if the processor i s removed. e cover must be
placed if you wish to return the motherboard for aer service.

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14

2.2 Installing the CPU Fan and Heatsink

1 2

B250 Pro4

FAN

CPU_

English

15

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 identical (the same

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

2. It is unable to activate Dual Channel Memor y Te chnology with only one or three
memory module installed.

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

Dual Channel Memory Conguration

Priority DDR4_A1 DDR4_A2 DDR4_B1 DDR4_B2

1 Populated Populated
2 Populated Populated
3 Populated Populated Populated Populated

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

English

16

B250 Pro4

1

2

3

English

17

2.4 Expansion Slots (PCI and PCI Express Slots)

ere is I PCI slot and 5 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.

PCI slot:

e PCI1 is used to install expansion cards that have 32-bit PCI interface.

PCIe slots:

PCIE1 (PCIe 3.0 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 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

PCIE5 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE2 PCIE4

PCIe Slot Congurations

Single Graphics Card x16 N/A

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Two Graphics Cards in

CrossFireXTM Mode

For a better ther mal environment, ple ase connect a ch assi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1, CHA_ FAN2 or CHA_FAN3) when u sing mul­tiple graphics cards.

x16 x4

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”. e illustration shows a 3-pin jumper whose pin1 and pin2 are “Short”

when a jumper cap is placed on these 2 pins.

Clear CMOS Jumper

(CLRMO S1)

(see p.7, No. 20)

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 pin2 and pin3 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.

Clear CMOSDefault

B250 Pro4

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

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19

2.6 Onboard Headers and Connectors

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

System Panel Header

(9-pi n PANEL1)

(see p.7, No. 14)

PWRBTN (Power Switch):

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

RESET (Reset Switch):
Connec t to the reset switch on the chassi s front panel. P ress the reset sw itch to restart
the computer if the compute r freezes and fails to perform a normal restart.

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

HDLED (Ha rd Drive Activity LED):
Connec t to the hard drive ac tivity LED on the chassis front panel. e LED is on
when the hard drive i s reading or writing data.

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

1

PLED+

PLED-

HDLED-

HDLED+

PWRBTN#

GND

RESET#

GND

GND

Connect the power

switch, reset switch and

system status indicator on

the chassis to this header

according to the pin

assignments below. Note

the positive and negative

pins before connecting

the cables.

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20

B250 Pro4

PLED-

SPEAKER

Power LED and Speaker

Header

(7-pin SPK_PLED1)

(see p.7, No. 15)

Serial ATA3 Connectors

(SATA3_0:

see p.7, No. 13)

(SATA3_1:

see p.7, No. 12)

(SATA3_ 2:

see p.7, No. 11)

(SATA3_ 3:

see p.7, No. 10)

(SATA3_4:

see p.7, No. 9)

(SATA3_ 5:

see p.7, No. 8)

USB 2.0 Headers

(9-pin USB_3_4)

(see p.7, No. 18)

(9-pin USB_5_6)

(see p.7, No. 19)

1

USB_PWR

1

USB_PWR

DUMMY
DUMMY
+5V

PLED+

PLED+

SATA_4

SATA_2

SATA_0

P-

P+

P+

P-

GND

GND

DUMMY

Please connect the

chassis power LED and

the chassis speaker to this

header.

ese six SATA3

connectors support SATA

data cables for internal

SATA_5

storage devices with up to

6.0 Gb/s data transfer rate.

* If M2_1 is occupied by a SATA-

SATA_3

type M.2 device, SATA3_5 will

be disabled.

* If M2_2 is occupied by a SATA-

SATA_1

type M.2 device, SATA3_0 will

be disabled.

ere are two USB

2.0 headers on this

motherboard. Each USB

2.0 header can support

two ports.

USB 3.0 Header

(19-pin USB3_3_4)

(see p.7, No. 7)

Vbus

IntA_PA_SSRX-

IntA_PA_SSRX+

IntA_PA_SSTX-

IntA_PA_SSTX+

IntA_PA_D-

IntA_PA_D+

VbusVbus

IntA_PB_SSRX-

IntA_PB_SSRX+

GND

IntA_PB_SSTX-

GND

IntA_PB_SSTX+

GND

IntA_PB_D-

GND

IntA_PB_D+

Dummy

1

Besides four USB 3.0

ports on the I/O panel,

there is one header on this

motherboard. Each USB

3.0 header can support

two ports.

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21

Front Panel Audio Header

(9-pin HD_ AUDIO1)

(see p.7, No. 24)

1. High Denition Au dio supports Jack Sen sing, but the panel wire on the chas sis
must support HDA to function correctly. Please follow the instructions in our
manual and chassis manual to install your system.

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

1

GND

PRESENCE#

MIC2_R

MIC2_L

MIC_RET

J_SENSE

OUT2_R

OUT_RET

OUT2_L

is header is for

connecting audio devices

to the front audio panel.

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Chassis Fan Connectors

(4-pin CHA_FAN1)

(see p.7, No. 17)

(4-pin CHA_FAN2)

(see p.7, No. 2)

Chassis Fan / Waterpump

Fan Connector

(4-pin CHA_FAN3/W_

PUM P)

(see p.7, No. 16)

FAN_SPEED_CONTROL

CHA_FAN_SPEED

FAN_VOLTAGE

FAN_SPEED_CONTROL

CHA_FAN_SPEED

FAN_VOLTAGE

Please connect fan cables

to the fan connectors and

match the black wire to

the ground pin.

GND

Please connect fan cables

to the fan connectors and

match the black wire to

the ground pin.

GND

B250 Pro4

FAN_VOLTAGE

1

13

5

8

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.7, No. 5)

ATX Power Connector

(24-p i n ATX PWR1)

(see p.7, No. 6)

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.7, No. 1)

Serial Port Header

(9-p in CO M1)

(see p.7, No. 23)

GND

1

CPU_FAN_SPEED

FAN_SPEED_CONTROL

24

12

4

RRXD1

DDTR#1

DDSR#1

CCTS#1

RRI#1

RRTS#1

GND

TTXD1

DDCD#1

is motherboard pro-

vides a 4-Pin CPU fan

(Quiet Fan) connector.

If you plan to connect a

3-Pin CPU fan, please

connect it to Pin 1-3.

is motherboard pro-

vides a 24-pin ATX power

connector. To use a 20-pin

ATX power supply, please

plug it along Pin 1 and Pin

13.

is motherboard pro-

vides an 8-pin ATX 12V

1

power connector. To use a

4-pin ATX power supply,

please plug it along Pin 1

and Pin 5.

is COM1 header

supports a serial port

module.

Chassis Intrusion Header

(2-p in CI1)

(see p.7, No. 21)

1

Signal

GND

is motherboard supports

CASE OPEN de tec tion feat ure

th at d etects i f the cha ssis cove

has been removed. This feature

requires a chassis w ith chas sis

intrusion detection design.

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23

TPM Header

(17-pi n TP MS1)

(see p.7, No. 22)

is connector supports Trusted

Platform Module (TPM) system,

which can securely store keys,

SMB _CL K_M AIN

GND

SMB _DA TA_ MAIN

LAD 2

GND

LAD 1

S_P WRD WN#

SER IRQ #

GND

digital certicates, passwords,

1

+3V

LAD 3

LAD 0

FRA ME

PCI CLK

PCI RST #

and data. A TPM system also

helps enhance network security,

GND

protects digital identities, and

+3V SB

ensures platform integrity.

underbolt AIC

Connector

(5-pin TB2)

(see p.7, No. 23)

underbolt AIC Header

(10 -pi n TB1)

(see p.7, No. 26)

1

PA_DPSRC_HPD

I2C_MASTER_DATA

1

SLP_S3#

CIO Plug Event

Force Power

I2C_MASTER_CLK

PA_PPS_INT#

GND

GND

SLP_S5#

Please connect a underbolt™

add-in card (AIC) to this

connector via the GPIO cable.

Please connect a underbolt™

add-in card (AIC) to this

connector via the GPIO cable.

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24

2.7 CrossFireXTM and Quad CrossFireXTM Operation Guide

is motherboard supports CrossFireXTM and Quad CrossFireXTM that allows you

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

1. You should only use identical 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 PCIE4 slot.

Make sure that the cards are properly

seated on the slots.

B250 Pro4

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

deta ils .)

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25

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.

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26

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 Uninstalle r is an optional downloa d. 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® sy stem tray.

B250 Pro4

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.

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27

2.8 M.2_SSD (NGFF) Module Installation Guide

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

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

Socket (M2_1) supports SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3

x4 (32 Gb/s). e M.2 Sockets (M2_2) supports SATA3 6.0 Gb/s module and M.2 PCI

Express module up to Gen3 x2 (16 Gb/s).

* If M2_1 is occupied by a SATA-type M.2 device, SATA3_5 will be disabled.

* 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.

English

5

4

3

Step 2

Depending on the PCB type and

length of your M.2_SSD (NGFF)

module, nd the corresponding nut

2

1

A

BCDE

location to be used.

No. 1 2 3 4

Nut Location A B C D

PCB Length 3cm 4.2cm 6cm 8cm

Module Type Type 2230 Ty pe 2242 Ty pe22 60 Ty pe 22 80

28

B250 Pro4

Step 3

Move the stando based on the

module type and length.

e stando is placed at the nut

A

BCDE

A

BCDE

A

BC

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

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.

ABCDE

Step 6

Tighten the screw with a screwdriver

to secure the module into place.

NUT1NUT2DE

Please do not overtighten the screw

as this might damage the module.

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29

M.2_SSD (NGFF) Module Support List

Vendor Size Interface Length P/N

ADATA 128GB SATA3 2280 AXNS381E-128GM-B
ADATA 256GB SATA3 2280 A XNS381E -256GM-B
ADATA 32GB SATA3 2230 AXNS330E-32GM-B
Crucial 120GB SATA3 2280 CT120M500SSD4
Crucial 240GB SATA3 2280 CT240M500SSD4
Intel 80GB SATA3 2280 Intel SSDSCKGW080A401/80G
Intel 256GB PCIe3 x4 2280 SSDPEKKF256G7
Intel 512GB PCIe3 x4 2280 SSDPEKKF512G7
Kingston 120GB SATA 3 2280 SM2280S3
Kingston 480GB PCIe2 x4 2280 SH2280S3/480G
OCZ 512GB PCIe3 x4 2280 RVD400 -M2280-512G (NVME)
Plextor 128GB PCIe3 x4 2280 PX-128M8PeG
Plextor 1TB PCIe3 x4 2280 PX-1TM8PeG
Plextor 256GB PCIe3 x4 2280 PX-256M8PeG
Plextor 256GB PCIe 2280 PX-G25 6M6e
Plextor 512GB PCIe3 x4 2280 PX-512M8Pe G
Plextor 512GB PCIe 2280 PX-G512M6e
Samsung 256GB PCIe3 x4 2280 SM951 (MZHPV256HDGL)
Samsung 256GB PCIe3 x4 2280 SM951 (NVM E)
Samsung 512GB PCIe3 x4 2280 SM951 (MZHPV512HDGL)
Samsung 512GB PCIe3 x4 2280 SM951 (NVME)
Samsung 512GB PCIe x4 2280 XP941-512G (MZHPU512HCGL)
SanDisk 128GB PCIe 2260 SD6PP4M-128G
SanDisk 256GB PCIe 2260 SD6PP4M-256G
Team 128GB SATA3 2242 TM4PS4128GMC105
Team 128GB SATA3 2280 TM8PS4128GMC105
Team 256GB SATA3 2280 TM8PS4 256GMC105
Team 256GB SATA3 2242 TM4PS4256GMC105
Tra nscend 256GB SATA3 2242 TS256GMTS400
Tra nscend 512GB SATA3 2260 TS512GMTS600
Tra nscend 512GB SATA3 2280 TS512GMTS800
V-Col or 120GB SATA3 2280 VLM100-120G-2280B-RD
V-Col or 240GB SATA3 2280 VLM100-240G -22 80B-R D
V-Col or 240GB SATA3 2280 VSM10 0-240G-2280

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30

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

details: http://www.asrock.com

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.

B250 Pro4

To improve Windows 7 compatibility, please download and install the following hot
x provided by Microso.
“KB2720599”: http://support.microso.com/kb/2720599/en-us

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31

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-Tu ni n g can be downloaded from ASRock Live Update & APP Shop. Aer the

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

“A-Tu ni n g“ icon, A-Tu n i ng main menu will pop up.

3.2.2 Using A-Tuning

ere are six 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.

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32

OC Tw eaker

Congurations for overclocking the system.

B250 Pro4

System Info

View information about the system.

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

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33

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.

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34

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 install various apps and support utilities. With ASRock 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

B250 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.

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35

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.

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36

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 "Insta lled" 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

B250 Pro4

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

Step 4

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

upper right corner.

to start downloading.

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

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37

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

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38

Click on the yellow icon

to start upgrading.

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.

B250 Pro4

Step 1

Please check the item information before update. Click on

Step 2

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

Step 3

Click Update to start the update process.

to see more details.

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39

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.

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40

B250 Pro4

3.4 Enabling USB Ports for Windows® 7 Installation

Intel® new processors have removed removed their support for the Enhanced Host

Controller Interface (EHCI – USB2.0) and only kept the eXtensible Host Controller

Interface (XHCI – USB3.0). Due to that fact that XHCI is not included in the

Windows 7 inbox drivers, users may nd it dicult to install Windows 7 operating

system because the USB ports on their motherboard won’t work. In order for the

USB ports to function properly, please create a Windows® 7 installation disk with

the Intel® USB 3.0 eXtensible Host Controller (xHCI) drivers packed into the ISO

le.

Requirements

A Windows® 7 installation disk or USB drive

•

USB 3.0 drivers (included in the ASRock Support CD or website)

•

A Windows® PC

•

Win7 USB Patcher (included in the ASRock Support CD or website)

•

Scenarios

You have an ODD and PS/2 ports:

If there is an optical disc drive, PS/2 ports and PS/2 Keyboard or mouse on your computer,

you can skip the instructions below and go ahead to install Windows® 7 OS.

You’ve got nothing:

If you do not have an optical disc drive, please nd another computer and follow the

instructions below to create a new ISO le with the “Win7 USB Patcher”. en use the new

patched Windows® 7 installation USB drive to install Windows® 7 OS.

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41

Instructions

Step 1

Insert the Windows® 7 installation disk or USB drive to your system.

Step 2

Extract the tool (Win7 USB Patcher) and launch it.

Step 3

Select the “Win7 Folder” from Step1 by clicking the red circle as shown as the picture

below.

Step 4

Select the “USB Driver Folder” by clicking the red circle as shown as the picture below.

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42

If you are using ASRock’s Support CD for the USB 3.0 driver, please select your CD-ROM.

B250 Pro4

Step 5

Select where to save the ISO le by pressing the red circle as shown as the picture below.

Step 6

If you want to burn the patched image to a CD, please check “Burn Image” and select “Target

Device to Burn”. If not, the patched ISO image will be exported to the destination selected

in Step5. en Press “Start” to proceed.

Step 7

Now you are able to install Windows® 7 on processors with the new burned CD. Or please

use the patched ISO image to make an OS USB drive to install the OS.

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43

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 descriptions are for reference purpose only, and they may not ex actly match what you
see on your screen .

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44

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.

B250 Pro4

No. Function

Help

1

Load UEFI Defaults

2

Save Changes and Exit

3

Discard Changes

4

Change Language

5

Switch to Advanced Mode

6

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45

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

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46

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

B250 Pro4

+ / -

<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

47

English

4.4 Main Screen

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

display the system overview.

Favorite

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

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48

4.5 OC Tweaker Screen

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

B250 Pro4

Becau se the UEFI soware is constantly being upd ated, the following UEFI setup screens
and descriptions are for reference purpose only, and they may not ex actly match what you
see on your screen .

CPU Conguration

Boot Performance Mode

Default is Max Non-Turbo performance mode. It will keep cpu Flex-ratio till OS

hando. Max Battery mode will set CPU ratio as x8 till OS hando. is option is

suggested for BCLK overclocking.

FCLK Frequency

Congure the FCLK Frequency.

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 Technology enables the processor to run above its base operating

frequency when the operating system requests the highest performance state.

Intel Speed Shift Technology

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

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

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.

System Agent Current Limit

Congure the current limit of the system agent. A lower limit can protect the CPU

and save power, while a higher limit may improve performance.

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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 Slice 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.

DRAM Conguration

DRAM Tweaker

Fine tune the DRAM settings by leaving marks in checkboxes. Click OK to conrm and

apply your new settings.

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.

Primary Timing

CAS# Latency (tCL)

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

in response.

RAS# to CAS# Delay and Row Precharge (tRCDtRP) O

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

a row of memory and accessing columns within it.

Row Precharge: 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.

B250 Pro4

Command Rate (CR)

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

be issued.

Secondary Timing

Write Recovery Time (tWR)

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

before an active bank can be precharged.

Refresh Cycle Time (tRFC)

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

the same rank.

RAS to RAS Delay (tRRD_L)

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

rank.

RAS to RAS Delay (tRRD_S)

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

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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 interna l 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 interna l 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.

Third Timing

tREFI

Congure refresh cycles at an average periodic interval.

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tCKE

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

command internally once it enters Self-Refresh mode.

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.

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.

B250 Pro4

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.

tWRWR_dd

Congure between module write to write delay.

Advanced Setting

MRC Fast Boot

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

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Voltage Conguration

CPU Vcore Voltage

Congure the voltage for the CPU Vcore.

CPU Load-Line Calibration

CPU Load-Line Calibration helps prevent CPU voltage droop when the system is

under heav y load.

GT Voltage

Congure the voltage for the integrated GPU.

GT Load-Line Calibration

GT Load-Line Calibration helps prevent GT voltage droop when the system is under

heavy load.

DRAM Voltage

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

DRAM Activating Power Supply

Congure the voltage for the DRAM Activating Power Supply.

PCH +1.0 Voltage

Congure the chipset voltage (1.0V).

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VCCIO Voltage

Congure the voltage for the VCCIO.

VCCST Voltage

Congure the voltage for the VCCST.

VCCSA Voltage

Congure the voltage for the VCCSA.

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

Save current UEFI settings as an user default prole to disk.

Load User UEFI Setup Prole to Disk

Load previously saved user defaults from the disk.

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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, Intel(R) under-

bolt, Super IO Conguration, ACPI Conguration, USB Conguration and Trusted

Computing.

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

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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

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.

B250 Pro4

Active Processor Cores

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

CPU C States Support

Enable CPU C States Support for power saving. It is recommended to keep C3, C6

and C7 all enabled for better power saving.

Enhanced Halt State (C1E)

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

CPU C3 State Support

Enable C3 sleep state for lower power consumption.

CPU C6 State Support

Enable C6 sleep state for lower power consumption.

CPU C7 State Support

Enable C7 sleep state for lower power consumption.

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Package C State Support

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

CFG Lock

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

CPU Thermal Throttling

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

ing.

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.

Software Guard Extensions (SGX)

Use this item to enable or disable So ware Controlled Soware Guard Extensions

(SGX).

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4.6.2 Chipset Conguration

Primary Graphics Adapter

Select a primary VGA.

B250 Pro4

Top of Lower Usable DRAM

Set the maximum value of TOLUD. Set this item to Dynamic to allow TOLUD to

adjust automatically based on the largest MMIO length of the installed graphic

cont roller.

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.

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.

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PCIE4 Link Speed

Select the link speed for PCIE4.

PCIE5 Link Speed

Select the link speed for PCIE5.

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.

IOAPI C 24-119 Entr ies

Enables/Disables IOAPIC 24-119 Entries. IRQ24-119 may be used by PCH devices.

Disabling those interrupts may cause certain devices failure.

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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.

Onboard LAN

Enable or disable the onboard network interface controller.

Onboard HD Audio

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

automatically disable it when a sound card is installed.

Front Panel

Enable/disable front panel HD audio.

Onboard HDMI HD Audio

Enable audio for the onboard digital outputs.

Riser Card Support

Enable/disable the support of riser card.

WAN Radio

Enable/disable the WiFi module's connectivity.

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.

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4.6.3 Storage Conguration

SATA Controller(s)

Enable/disable the SATA controllers.

SATA Controller Speed

Indicates the maximum speed the SATA controller can support.

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SATA Mode Selection

AHCI: Supports new features that improve performance.

Intel RST Premium (RAID): Combine multiple disk drives into a logical unit.

SATA Aggressive Link Power Management

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

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

mode.

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

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

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

indicators of reliability.

4.6.4 Intel® Thunderbolt

Intel® Thunderbolt Technology

Enable or disable the Intel® underbolt™ function.

B250 Pro4

Security Level

Select Legacy to skip the Windows certication checking process for underbolt™

devices. Select Unique ID for checking the Windows certication, and show

warning messages if the devices aren't certied. Or select DP++ to support DP 1.2.

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4.6.5 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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PS2 Y- Cable

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

4.6.6 ACPI Conguration

Suspend to RAM

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

S3 power saving.

B250 Pro4

ACPI HEPT Table

Enable the High Precision Event Timer for better performance.

PS/2 Keyboard Power On

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

PCIE/PCI Devices Power On

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

Ring-In Power On

Allow the system to be waked up by onboard COM port modem Ring-In signals.

RTC Alarm Power On

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

it be handled by your operating system.

USB Keyboard/Remote Power On

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

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USB Mouse Power On

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

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4.6.7 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.

B250 Pro4

PS/2 Simulator

Enable the support of I/O port 60h/64h emulation. is should be enabled for the

complete USB keyboard legacy support for non-USB aware OSes.

*Enable this option if you install Windows 7.

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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4.6.8 Trusted Computing

Security Device Support

Enable or disable BIOS support for security device.

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4.7 Tools

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.

B250 Pro4

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.

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Boot Manager

Boot Manager is specically designed for the dual OS platform/multi-OS platform

users to easily customize and manage the boot menu.

*Please connect more than one boot devices to use this tool.

Boot Manager

Enable/disable the Boot Manager.

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Boot Manager Timeout

Enable/disable the Boot Manager Timeout.

Timeout Seconds

Congure the number of seconds to wait for the Boot Manager.

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.

B250 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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4.8 Hardware Health Event Monitoring Screen

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

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

speed and voltage.

Fan Tuning

Measure Fan Min Duty Cycle.

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Fan-Tastic Tuning

Select a fan mode for CPU Fans 1&2, 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 Fans, or choose Customize to set 5 CPU temperatures

and assign a respective fan speed for each temperature.

CPU Fan Step Up

e Vaule of CPU Fan Step Up

CPU Fan Step Down

e Vaule of CPU Fan Step Down

Chassis Fan 1 Setting

Select a fan mode for Fans, 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

e Vaule of Chassis Fan Step Up

Chassis Fan 1 Step Down

e Vaule of Chassis Fan Step Down

Chassis Fan 2 Setting

Select a fan mode for Fans, 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

e Vaule of Chassis Fan Step Up

B250 Pro4

Chassis Fan 2 Step Down

e Vaule of Chassis Fan Step Down

CHA_FAN3 / W_PUMP Switch

Switch CHA_FAN3 / W_PUMP header function

Chassis Fan 3 Control Mode

Select DC/PWM mode for Chassis Fan 3.

Chassis Fan 3 Setting

Select a fan mode for Chassis Fan, 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.

Over Temperature Protection

When Over Temperature Protection is enabled, the system automatically shuts

down when the motherboard is overheated.

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Case Open Feature

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

removed.

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4.9 Security Screen

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

You may also clear the user password.

B250 Pro4

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 Windows 8.1 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.

Boot Option #1

Use this item to set the system boot order.

Boot Option #2

Use this item to set the system boot order.

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USB Device BBS Priorities

Use this item to set the order of the legacy devices in this group.

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.

Boot Failure Message

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

the default settings.

CSM (Compatibility Support Module)

B250 Pro4

CSM

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

you’re running a WHCK test. If you are using Windows 8.1 64-bit and all of your

devices support UEFI, you may also disable CSM for faster boot speed.

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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.

Launch Video 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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4.11 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.

B250 Pro4

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 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.

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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://ww w.asrock.com; or you may contact your dealer

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

form at http://www.asrock.com/support/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]