ASRock Z490M-ITX-ac Service Manual

Version 1.0

Published January 2020

Copyright©2020 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.

CE Warning

is device complies with directive 2014/53/EU issued by the Commision of the European
Community.

is equipment complies with EU radiation exposure limits set forth for an uncontrolled
environment.
is equipment should be installed and operated with minimum distance 20cm between
the radiator & your body.

Operations in the 5.15-5.35GHz band are restricted to indoor usage only.

Radio transmit power per transceiver ty pe

Function Frequency Maximum Output Power (EIRP)

2400-2483.5 MHz 18.5 + / -1.5 dbm

5150-5250 MHz 21.5 + / -1.5 dbm

WiFi

Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

5250-5350 MHz

5470-5725 MHz

18.5 + / -1.5 dbm (no TPC)

21.5 + / -1.5 dbm (TPC)

25.5 + / -1.5 dbm (no TPC)

28.5 + / -1.5 dbm (TPC)

Contents

Chapter 1 Introduction 1

1.1 Package Contents 1

1.2 Specications 2

1.3 Motherboard Layout 7

1.4 I/O Panel 9

1.5 WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antenna 11

Chapter 2 Installation 13

2.1 Installing the CPU 14

2.2 Installing the CPU Fan and Heatsink 17

2.3 Installing Memory Modules (DIMM) 18

2.4 Expansion Slots (PCI Express Slot) 20

2.5 Jumpers Setup 21

2.6 Onboard Headers and Connectors 22

2.7 M.2_SSD (NGFF) Module Installation Guide (M2_1 and M2_2) 27

Chapter 3 Software and Utilities Operation 32

3.1 Installing Drivers 32

3.2 ASRock Motherboard Utility (A-Tuning) 33

3.2.1 Installing ASRock Motherboard Utility (A-Tuning) 33

3.2.2 Using ASRock Motherboard Utility (A-Tuning) 33

3.3 ASRock Live Update & APP Shop 36

3.3.1 UI Overview 36

3.3.2 Apps 37

3.3.3 BIOS & Drivers 40

3.3.4 Setting 41

3.4 Nahimic Audio 42

3.5 ASRock Polychrome SYNC 43

Chapter 4 UEFI SETUP UTILITY 46

4.1 Introduction 46

4.2 EZ Mode 47

4.3 Advanced Mode 48

4.3.1 UEFI Menu Bar 48

4.3.2 Navigation Keys 49

4.4 Main Screen 50

4.5 OC Tweaker Screen 51

4.6 Advanced Screen 62

4.6.1 CPU Conguration 63

4.6.2 Chipset Conguration 65

4.6.3 Storage Conguration 68

4.6.4 Super IO Conguration 69

4.6.5 ACPI Conguration 70

4.6.6 USB Conguration 71

4.6.7 Trusted Computing 72

4.7 Tools 73

4.8 Hardware Health Event Monitoring Screen 75

4.9 Security Screen 77

4.10 Boot Screen 78

4.11 Exit Screen 81

Z490M-ITX/ac

Chapter 1 Introduction

ank you for purchasing ASRock Z 490M-ITX/ac motherboard, a reliable

motherboard produced under ASRock’s consistently stringent quality control.

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

commitment to quality and endurance.

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

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

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

the BIOS setup.

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

1.1 Package Contents

ASRock Z490M-ITX/ac Motherboard (Mini-ITX Form Factor)

•

ASRock Z490M-ITX/ac Quick Installation Guide

•

ASRock Z490M-ITX/ac Support CD

•

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

•

1 x I/O Panel Shield

•

2 x ASRock WiFi 2.4/5 GHz Antennas (Optional)

•

2 x Screws for M.2 Sockets (Optional)

•

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1

1.2 Specications

Platform

CPU

Chipset

Memory

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•

•

•

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•

•

•

•

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

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

* CoreTM (i9/i7) support DDR4 up to 2933; CoreTM (i5/i3),

Pentium® and Celeron® support DDR4 up to 2666.

•

•

•

•

Mini-ITX Form Factor

Supports 10th Gen Intel® CoreTM Processors (Socket 1200)

Digi Power design

7 Power Phase design

Supports Intel® Turbo Boost 2.0 Technology

Supports Intel® K-Series unlocked CPUs

Supports ASRock BCLK Full-range Overclocking

Intel® Z490

Dual Channel DDR4 Memory Technology

2 x DDR4 DIMM Slots

Supports DDR4 4400+(OC)*/4333(OC)/4266(OC)/4133

(OC)/4000(OC)/3866(OC)/3800(OC)/3733(OC)/3600(OC)/

3200(OC)/2933/2800/2666/2400/2133 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

1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)

•

* Supports PCIe riser cards to extend one x16 slot to two x8 slots

* Supports NVMe SSD as boot disks

1 x Vertical M.2 Socket (Key E) with the bundled WiFi-

•

802.11ac module (on the rear I/O)

Graphics

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

•

can be supported only with processors which are GPU

integrated.

Hardware Accelerated Codecs: AVC/H.264, HEVC/H.265

•

8bit, HEVC/H.265 10bit, VP8, VP9 8bit, VP9 10bit, MPEG 2,

MJPEG, VC-1

* VP9 10bit and VC-1 are for decode only.

* VP8 and VP9 encode are not supported by Windows OS.

Graphics, Media & Compute: Microso DirectX 12, OpenGL

•

4.5, Intel® Built In Visuals, Intel® Quick Sync Video, Hybrid /

Switchable Graphics, OpenCL 2.1

Display & Content Security: Rec. 2020 (Wide Color Gamut),

•

Microso PlayReady 3.0, Intel® SGX Content Protection,

UHD/HDR Blu-ray Disc

Dual graphics output: support HDMI and DisplayPort 1.4

•

ports by independent display controllers

Supports HDMI 1.4 with max. resolution up to 4K x 2K

•

(4096x2160) @ 30Hz

Supports DisplayPort 1.4 with max. resolution up to 4K x 2K

•

(4096x2304) @ 60Hz

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

•

HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant

HDMI monitor is required)

Supports HDCP 2.3 with HDMI 1.4 and DisplayPort 1.4

•

Ports

Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and

•

DisplayPort 1.4 Ports

Z490M-ITX/ac

Audio

7.1 CH HD Audio with Content Protection (Realtek

•

ALC1200 Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection

•

Nichicon Fine Gold Series Audio Caps

•

PCB Isolate Shielding

•

Individual PCB Layers for R/L Audio Channel

•

Nahimic Audio

•

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3

LAN

Wireless
LAN

1 x 2.5 Gigabit LAN 10/100/1000/250 0 Mb/s (Dragon RTL-

8125BG):

Supports Dragon 2.5G LAN Soware

•

- Smart Auto Adjust Bandwidth Control

- Visual User Friendly UI

- Visual Network Usage Statistics

- Optimized Default Setting for Game, Browser, and

Streaming Modes

- User Customized Priority Control

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

1 x Gigabit LAN 10/100/1000 Mb/s (Intel® I219V):

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

Intel® 802.11ac WiFi Module

•

Supports IEEE 802.11a/b/g/n/ac

•

Supports Dual-Band (2.4/5 GHz)

•

Supports high speed wireless connections up to 433Mbps

•

Supports Bluetooth 4.2 / 3.0 + High speed class II

•

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Rear Panel
I/O

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

1 x DisplayPort 1.4

•

2 x USB 2.0 Ports (Supports ESD Protection)

•

4 x USB 3.2 Gen2 Type-A Ports (10 Gb/s) (Supports ESD

•

Protection)

1 x USB 3.2 Gen1 Type-A Port (Supports ESD Protection)

•

1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection)

•

2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED

•

LED)

HD Audio Jacks: Line in / Front Speaker / Microphone

•

Storage

Connector

Z490M-ITX/ac

4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,

•

RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology

17), NCQ, AHCI and Hot Plug*

1 x Ultra M.2 Socket (M2_1), supports M Key type 2280 M.2

•

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

Gen3 x4 (32 Gb/s)**

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

•

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

** Supports Intel® OptaneTM Technology

** Supports NVMe SSD as boot disks

** Supports ASRock U.2 Kit

1 x RGB LED Header

•

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

1 x Addressable LED Header

•

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

1 x CPU Fan Connector (4-pin)

•

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

1A (12W) fan power.

1 x Chassis Fan Connector (4-pin)

•

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

mum 1A (12W) fan power.

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

•

Speed Control)

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

maximum 2A (24W) fan power.

* CHA_FAN1/WP can auto detect if 3-pin or 4-pin fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

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

•

ESD Protection)

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

•

(Supports ESD Protection)

BIOS
Feature

AMI UEFI Legal BIOS with multilingual GUI support

•

ACPI 6.0 Compliant wake up events

•

SMBIOS 2.7 Support

•

CPU, DRAM, PCH 1.05V, VCCIO, VCCSA Voltage Multi-

•

adjustment

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Hardware
Monitor

Temperature Sensing: CPU, Chassis, Chassis/Water Pump

•

Fans

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

•

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

•

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

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

•

Pump Fans

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

•

OS

Certica­tions

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

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

Microso® Windows® 10 64-bit

FCC, CE

•

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

•

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1.3 Motherboard Layout

PCIE1

DDR 4_ A1 (64 bi t, 28 8-p in mo dul e)

DDR 4_ B1 (64 bi t, 28 8-p in mo dul e)

CPU_FAN1

CHA_FAN1 /WP

Ro HS

Z4 90 M- IT X /a c

USB 2.0
T: USB 1
B: U SB2

PS2

Keybo ard

/Mous e

1

HD_AUDI O1

1

SPEAKER 1

Inte l

Z490

ATXP WR1

USB3_3 4

1

PANEL1

HDLED R ESET

PLED PWRBTN

1

Top:

LINE IN

Cent er:

FRON T

Bott om:

MIC IN

SATA3_3

SATA3_2

1

CLRMOS 1

SATA3_1

SATA3_0

1

USB_34

M2_ 2

Top:
RJ-4 5

Top:
RJ-4 5

BIOS
ROM

M2_ WIF I1

DP_ 1

CHA_FAN2

Ul tra M .2

PCIe Gen3 x4

USB 3.2 Ge n2
T: USB 31_1
B: U SB31 _2

USB 3.2 Ge n2
T: USB 31_ 3
B: U SB31 _4

HDM I1

USB 3 .2 Ge n1
T: USB3 _TA_1
B: US B3_T C_1

RGB_LED 1

1

ADDR_LE D1

1

M2_ 1

Z490M-ITX/ac

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No. Description

1 ATX 12V Power Connector (ATX12V1)

2 CPU Fan Connector (CPU_FAN1)

3 Chassis/Waterpump Fan Connector (CHA_FAN1/WP)

4 RGB LED Header (RGB_LED1)

5 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

6 ATX Power Connector (ATXPWR1)

7 Addressable LED Header (ADDR_LED1)

8 USB 3.2 Gen1 Header (USB3_ 34)

9 SATA3 Connector (SATA3_1)

10 SATA3 Connector (SATA3_0)

11 SATA3 Connector (SATA3_3)

12 SATA3 Connector (SATA3_2)

13 System Panel Header (PANEL1)

14 USB 2.0 Header (USB_34)

15 Clear CMOS Jumper (CLRMOS1)

16 Chassis Speaker Header (SPEAKER1)

17 Front Panel Audio Header (HD_AUDIO1)

18 Chassis Fan Connector (CHA_FAN2)

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1.4 I/O Panel

1

Z490M-ITX/ac

6

8

2

3

4 5

7

14

No. Description No. Description

1 USB 2.0 Ports (USB12) 8 Antenna Ports

2 DisplayPort 1.4 9 Microphone (Pink)***

3 USB 3.2 Gen1 Type-A Port (USB3_TA_1) 10 USB 3.2 Gen2 Type-A Ports (USB31_34)

4 LAN RJ-45 Port (Intel® I219V)* 11 USB 3.2 Gen2 Type-A Ports (USB31_12)

5 2.5G LAN RJ-45 Port (Dragon RTL8125BG)** 12 USB 3.2 Gen1 Type-C Port (USB3_TC_1)

6 Line In (Light Blue)*** 13 HDMI Port

7 Front Speaker (Lime)*** 14 PS/2 Mouse/Keyboard Port

* 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

13 1011

12

9

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9

** 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/1Gbps connection

On Link Green 2.5Gbps connection

*** Functi on of the Audio Por ts in 7.1-channel Con guration:

Port Function

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

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Z490M-ITX/ac

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

WiFi-802.11ac + BT Module

is motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ac + BT v4.2

module (pre-installed on the rear I/O panel) that oers support for WiFi 802.11 a/b/

g/n/ac connectivity standards and Bluetooth v4.2. WiFi + BT module is an easy-to-

use wireless local area network (WLAN) adapter to support WiFi + BT. Bluetooth

v4.2 standard features Smart Ready technology that adds a whole new class of

functionality into the mobile devices. BT 4.2 also includes Low Energy Technolog y

and ensures extraordinary low power consumption for PCs.

* e transmission speed may vary according to the environment.

11

English

WiFi Antennas Installation Guide

Step 1

Prepare the WiFi 2.4/5 GHz Antennas that come

with the package.

Step 2

Connect the two WiFi 2.4/5 GHz Antennas to

the antenna connectors. Turn the antenna clock-

wise until it is securely connected.

Step 3

Set the WiFi 2.4/5 GHz Antenna as shown in the

illustration.

*You may need to adjust the direction of

the antenna for a stronger signal.

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12

Chapter 2 Installation

is is a Mini-ITX form factor motherboard. Before you install the motherboard,

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

Pre-installation Precautions

Take note of the following precautions before you install motherboard components

or change any motherboard settings.

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

•

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

components.

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

•

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

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

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

•

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

•

in the bag that comes with the components.

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

•

tighten the screws! Doing so may damage the motherboard.

Z490M-ITX/ac

13

English

2.1 Installing the CPU

1. Be fore you in sert the 1200 -Pin CPU into the socket, please check if the P nP cap
is on the socket, if the CPU sur face is unclean, or if th ere are any b ent pins in the
socket. Do not force to insert the CPU into the socket if above situ ation is found.
Other wise, the CPU wil l be seriously d amaged.

2. Unplug all power cabl es before installing th e CPU.

1

A

B

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14

2

Z490M-ITX/ac

3

5

4

15

English

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

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16

2.2 Installing the CPU Fan and Heatsink

1 2

Z490M-ITX/ac

CPU_FAN

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17

2.3 Installing Memory Modules (DIMM)

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

and supports Dual Channel Memory Technology.

1. For dual 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 Memory Technology w ith only one memor y
module instal led.

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

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

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18

Z490M-ITX/ac

1

2

3

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19

2.4 Expansion Slots (PCI Express Slot)

ere is 1 PCI Express slot slot on the motherboard.

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

PCIe slot:

PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

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20

2.5 Jumpers Setup

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

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

“Open”.

Clear CMOS Jumper

(CLRMOS1)

(see p.7, No. 15)

CLRMOS1 allows you to clear the data in CMOS. To clear and reset the system

parameters to default setup, please turn o the computer and unplug the power

cord from the power supply. Aer waiting for 15 seconds, use a jumper cap to

short the pins on CLR MOS1 for 5 seconds. However, please do not clear the

CMOS right aer you update the BIOS. If you need to clear the CMOS when you

just nish updating the BIOS, you must boot up the system rst, and then shut it

down before you do the clear-CMOS action. Please be noted that the password,

date, time, and user default prole will be cleared only if the CMOS battery is

removed. Please remember toremove the jumper cap aer clearing the CMOS.

2-pin Jumper

Z490M-ITX/ac

21

English