ASROCK Z390M-ITX/ac User manual

Version 1.0
Published March 2018
Copyright©2018 ASRock INC. All rights reserved.
Copyright Notice:
No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.
Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.
In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see www.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 type
Function Frequency Maximum Output Power (EIRP)
WiFi
2400-2483.5 MHz 18.5 + / -1.5 dbm
5150-5250 MHz 21.5 + / -1.5 dbm
5250-5350 MHz 18.5 + / -1.5 dbm (no TPC)
21.5 + / -1.5 dbm (TPC)
5470-5725 MHz 25.5 + / -1.5 dbm (no TPC)
28.5 + / -1.5 dbm (TPC)
Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

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Z390M-ITX/ac
Motherboard Layout
PCIE1
DDR4_A1 (64 bit, 288-pin module)
DDR4_B1 (64 bit, 288-pin module)
CPU _FA N1
CHA _FA N1 /W P
6
RoHS
Z390M-ITX/ac
3
7
9
14
8
USB 2.0
T: USB1
B: USB2
PS2
Keyboar d
/Mou se
18 1 7 1 6
15
5
1
HD_AUDIO1
1
SPE AK ER1
Intel
Z390
ATXPWR1
USB3 _6 _7
1
4
2
PANE L1
HDLE D RES ET
PLED P WRB TN
1
TPMS 1
1
1
CI1
HDMI1
Top:
LINE IN
Cente r:
FRONT
Botto m:
MIC IN
SATA3 _3
SATA3 _2
1
CLRMO S1
SATA3 _1
SATA3 _0
1
USB_ 3_ 4
SATA3 _5
SATA3 _4
M2_1
C 4
C 3C 2C 1
TTTT
Top:
RJ-45
Top:
RJ-45
1
10
11
12
13
19
BIOS
ROM
M2_WIFI1
DISPLAY1
CHA_FAN2
20
Ultra M.2
PC I e G e n3 x4
USB 3.1 Gen2
USB 3.1 Gen2
T: USB31_2
B: USB31_3
USB 3.1 Gen2
T: USB3_4
B: USB3_5
HDMI2
USB 3.1 Gen2
T: USB31_TA_1
B: USB31 _TC_1

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No. Description
1 ATX 12V Power Connector (ATX12V1)
2 Chassis/Waterpump Fan Connector (CHA_FAN1/WP)
3 CPU Fan Connector (CPU_FAN1)
4 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)
5 ATX Power Connector (ATXPWR1)
6 Chassis Fan Connector (CHA_FAN2)
7 USB 3.1 Gen1 Header (USB3_6_7)
8 SATA3 Connector (SATA3_1)
9 SATA3 Connector (SATA3_0)
10 SATA3 Connector (SATA3_3)
11 SATA3 Connector (SATA3_2)
12 System Panel Header (PANEL1)
13 USB 2.0 Header (USB_3_4)
14 Clear CMOS Jumper (CLRMOS1)
15 Chassis Intrusion Header (CI1)
16 SATA3 Connector (SATA3_4)
17 SATA3 Connector (SATA3_5)
18 Chassis Speaker Header (SPEAKER1)
19 TPM Header (TPMS1)
20 Front Panel Audio Header (HD_AUDIO1)

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Z390M-ITX/ac
I/O Panel
No. Description No. Description
1 USB 2.0 Ports (USB12) 9 Microphone (Pink)**
2 Display Port 10 USB 3.1 Gen2 Type-A Ports (USB31_45)
3 USB 3.1 Gen2 Type-A Port (USB31_TA_1) 11 USB 3.1 Gen2 Type-A Ports (USB31_23)
4 LAN RJ-45 Port (Intel® I219V)* 12 USB 3.1 Gen2 Type-C Port (USB31_TC_1)
5 LAN RJ-45 Port (Intel® I211AT)* 13 HDMI Port
6 Antenna Ports 14 HDMI Port
7 Line In (Light Blue)** 15 PS/2 Mouse/Keyboard Port
8 Front Speaker (Lime)**
* ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
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
ACT/LINK LED
SPEED LED
LAN Port
1
14 1011
12
4 5
9
8
7
3
6
13
15
2

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** 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.
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:
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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Z390M-ITX/ac
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 Technology
and ensures extraordinary low power consumption for PCs.
* e transmission speed may vary according to the environment.

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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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Z390M-ITX/ac
Chapter 1 Introduction
ank you for purchasing ASRock Z390M-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.
1.1 Package Contents
• ASRock Z390M-ITX/ac Motherboard (Mini-ITX Form Factor)
• ASRock Z390M-ITX/ac Quick Installation Guide
• ASRock Z390M-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)
• 1 x Screw for M.2 Socket (Optional)
Because 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 without further notice. If you require technical support related to
this motherboard, please visit our website for specic information about the model
you are using. You may nd the latest VGA cards and CPU support list on ASRock’s
website as well. ASRock website http://www.asrock.com.

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1.2 Specications
Platform • Mini-ITX Form Factor
CPU • Supports 9th and 8th Gen Intel® CoreTM Processors (Socket
1151)
• Digi Power design
• 6 Power Phase design
• Supports Intel® Turbo Boost 2.0 Technology
• Supports Intel® K-Series unlocked CPUs
• Supports ASRock BCLK Full-range Overclocking
Chipset • Intel® Z390
Memory • Dual Channel DDR4 Memory Technology
• 2 x DDR4 DIMM Slots
• Supports DDR4 4000+(OC)*/3866(OC)/3800(C)/3733(OC)
/3600(OC)/3200(OC)/2933(OC)/2800(OC)/2666/2400/2133
non-ECC, un-buered memory
* Please refer to Memory Support List on ASRock's website for
more information. (http://www.asrock.com/)
• Supports ECC UDIMM memory modules (operate in non-
ECC mode)
• Max. capacity of system memory: 32GB
• Supports Intel® Extreme Memory Prole (XMP) 2.0
• 15μ Gold Contact in DIMM Slots
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)

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Z390M-ITX/ac
Graphics • Intel® UHD Graphics Built-in Visuals and the VGA outputs
can be supported only with processors which are GPU
integrated.
• Supports Intel® UHD 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® UHD Graphics
• DirectX 12
• HWAEncode/Decode: AVC/H.264, HEVC/H.265 8-bit,
HEVC/H.265 10-bit, VP8, VP9 8-bit, VP9 10-bit (Decode
only), MPEG2, MJPEG, VC-1 (Decode only)
• ree graphics output options: DisplayPort 1.2 and 2 x
HDMI ports
• Supports Triple Monitor
• Supports HDMI with max. resolution up to 4K x 2K
(4096x2160) @ 30Hz
• Supports DisplayPort 1.2 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 Port (Compliant
HDMI monitor is required)
• Supports HDCP with HDMI and DisplayPort 1.2 Ports
• Supports 4K Ultra HD (UHD) playback with HDMI and
DisplayPort 1.2 Ports
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
• Nichicon Fine Gold Series Audio Caps

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LAN • Gigabit LAN 10/100/1000 Mb/s
• 1 x Giga PHY Intel® I219V, 1 x GigaLAN Intel® I211AT
• Supports Wake-On-LAN
• Supports Lightning/ESD Protection
• Supports Dual LAN with Teaming*
* Teaming is supported on Windows® 10 RS2 and above.
• Supports Energy Ecient Ethernet 802.3az
• Supports PXE
Wireless
LAN
• 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
Rear Panel
I/O
• 2 x Antenna Ports
• 1 x PS/2 Mouse/Keyboard Port
• 2 x HDMI Ports
• 1 x DisplayPort 1.2
• 2 x USB 2.0 Ports (Supports ESD Protection)
• 5 x USB 3.1 Gen2 Type-A Ports (10 Gb/s) (Supports ESD
Protection)
• 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (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 • 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,
RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology
16), NCQ, AHCI and Hot Plug*
* If M2_1 is occupied by a SATA-type M.2 device, SATA3_1 will
be disabled.
• 1 x Ultra M.2 Socket, supports M Key type
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)**
** Supports Intel® OptaneTM Technology
** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit

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Z390M-ITX/ac
Connector • 1 x TPM Header
• 1 x Chassis Intrusion Header
• 1 x CPU Fan Connector (4-pin)
* e CPU Fan Connector supports the CPU fan of maximum
1A (12W) fan power.
• 1 x Chassis Fan Connector (4-pin)
• 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 3.1 Gen1 Header (Supports 2 USB 3.1 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 1.0V, VCCST, CPU Internal PLL Voltage
Multi-adjustment
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
• CASE OPEN detection
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
OS Microso® Windows® 10 64-bit

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Certica-
tions
• FCC, CE
• ErP/EuP ready (ErP/EuP ready power supply is required)
Please realize that there is a certain risk involved with overclocking, including
adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using
third-party overclocking tools. Overclocking may aect your system’s stability, or
even cause damage to the components and devices of your system. It should be done
at your own risk and expense. We are not responsible for possible damage caused by
overclocking.
* For detailed product information, please visit our website: http://www.asrock.com

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Z390M-ITX/ac
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.
Chapter 2 Installation

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2.1 Installing the CPU
1. Before you insert the 1151-Pin CPU into the socket, please check if the PnP cap
is on the socket, if the CPU surface is unclean, or if there are any bent pins in the
socket. Do not force to insert the CPU into the socket if above situation is found.
Otherwise, the CPU will be seriously damaged.
2. Unplug all power cables before installing the CPU.
1
2
A
B

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Z390M-ITX/ac
4
5
3

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Please save and replace the cover if the processor is removed. e cover must be
placed if you wish to return the motherboard for aer service.