ASROCK Phantom Gaming Z490 User manual

Version 1.1
Published May 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 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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Z490 Phantom Gaming 4/ax
Motherboard Layout
Intel
Z490
DDR4_A2 (64 bit, 288-pin module)
DDR4_A1 (64 bit, 288-pin module)
DDR4_B2 (64 bit, 288-pin module)
DDR4_B1 (64 bit, 288-pin module)
ATX12V1
ATXPWR1
PCIE2
PCIE4
HDLED RESET
PLED PWRBTN
PANEL1
1
USB_3_4
1
1
SPK_PLED1
COM1
1
1
HD_AUDIO1
PCIE1
RoHS
13
16
19
20
1
Ultra M.2
PCIe Gen3 x4
CMOS
Battery
PCIE3
31
15
10
USB3_3_4
1
29
11
SATA3_4 SATA3_5
SATA3_0
SATA3_1
SATA3_2
SATA3_3
CLRMOS1
1
M2_WIFI1
M2_WIFI_CT1
M2_2
C 6
C 5
C 4
T B1
1
2
PCIE5
TTT
AUDIO
CODEC
SUPER
I/O
USB3_5_6
1
14
21
23
24
25
28 22
4
3
CHA_FAN1/WP
CHA_FAN2/WP
CHA_FAN3/WP
CPU_FAN2/WP
ATX12V2
CPU_FAN1
56
12
CHA_FAN4/WP
17
1
SPI_TPM_J1
18
27
ADDR_LED1
1
RGB_LED1
1
26
30
ADDR_LED2
1
RGB_LED2
1
7
8
32
CPU
DRAM
VGA
BOOT
9
Z490 PHANTOM GAMING 4/ax
USB 2.0
T: USB_1
B: USB_2
Top:
RJ-45
USB 3.2 Gen1
T: USB3_1
B: USB3_2
PS2
Keyboard
/Mouse
Top:
LINE IN
Center:
FRONT
Bottom:
MIC IN
USB 3.2 Gen2
T:USB31_TA_1
B: USB31_TC_1
HDMI1
WiFi-802.11ax
Module

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No. Description
1 ATX 12V Power Connector (ATX12V1)
2 ATX 12V Power Connector (ATX12V2)
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 CPU/Water Pump Fan Connector (CPU_FAN2/WP)
7 RGB LED Header (RGB_LED2)
8 Addressable LED Header (ADDR_LED2)
9 Post Status Checker (PSC)
10 ATX Power Connector (ATXPWR1)
11 USB 3.2 Gen1 Header (USB3_3_4)
12 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)
13 SATA3 Connector (SATA3_1)
14 SATA3 Connector (SATA3_0)
15 SATA3 Connector (SATA3_3)
16 SATA3 Connector (SATA3_2)
17 Chassis/Water Pump Fan Connector (CHA_FAN4/WP)
18 SPI TPM Header (SPI_TPM_J1)
19 Power LED and Speaker Header (SPK_PLED1)
20 SATA3 Connector (SATA3_5)
21 SATA3 Connector (SATA3_4)
22 System Panel Header (PANEL1)
23 Chassis/Water Pump Fan Connector (CHA_FAN3/WP)
24 USB 3.2 Gen1 Header (USB3_5_6)
25 USB 2.0 Header (USB_3_4)
26 Addressable LED Header (ADDR_LED1)
27 COM Port Header (COM1)
28 Front Panel Audio Header (HD_AUDIO1)
29 RGB LED Header (RGB_LED1)
30 Clear CMOS Jumper (CLRMOS1)
31 underbolt AIC Connector (TB1)
32 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)

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Z490 Phantom Gaming 4/ax
I/O Panel
1
11 7
810
3
2
6
5
4
9
* 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
** 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
ACT/LINK LED
SPEED LED
LAN Port
No. Description No. Description
1 USB 2.0 Ports (USB_1_2) 7 USB 3.2 Gen1 Ports (USB3_1_2)
2USB 3.2 Gen2 Type-A Port (USB31_TA_1) 8USB 3.2 Gen2 Type-C Port (USB31_TC_1)
3 LAN RJ-45 Port* 9 Antenna Ports
4 Line In (Light Blue)** 10 HDMI Port
5 Front Speaker (Lime)** 11 PS/2 Mouse/Keyboard Port
6 Microphone (Pink)**

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WiFi-802.11ax Module and ASRock WiFi 2.4/5 GHz Antenna
WiFi-802.11ax + BT Module
is motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ax + BT v5.1 module
that oers support for WiFi 802.11 a/b/g/n/ax connectivity standards and Bluetooth
v5.1. WiFi + BT module is an easy-touse wireless local area network (WLAN) adapter
to support WiFi + BT. Bluetooth v5.1 standard features Smart Ready technology that
adds a whole new class of functionality into the mobile devices. BT 5.1 also includes
Low Energy Technology and ensures extraordinary low power consumption for PCs.
e 2T2R WiFi solution sets a WiFi high speed standard and oers max link rate up to
2.4Gbps.
* e transmission speed may vary according to the environment.
ASRock WiFi 2.4/5 GHz Antenna

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Z490 Phantom Gaming 4/ax
WiFi Antenna Installation Guide
Step 1
Connect the WiFi 2.4/5 GHz Antenna to the
antenna connectors. Turn the antenna clockwise
until it is securely connected.
Step 2
Set the WiFi 2.4/5 GHz Antenna at 90-degree
angle.
*You may need to adjust the direction of the
antenna for a stronger signal.

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Chapter 1 Introduction
ank you for purchasing ASRock Z490 Phantom Gaming 4/ax 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 Z490 Phantom Gaming 4/ax Motherboard (ATX Form Factor)
• ASRock Z490 Phantom Gaming 4/ax Quick Installation Guide
• ASRock Z490 Phantom Gaming 4/ax Support CD
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 1 x ASRock WiFi 2.4/5 GHz Antenna (Optional)
• 1 x Screw for M.2 Socket (Optional)
• 1 x I/O Panel Shield
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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Z490 Phantom Gaming 4/ax
1.2 Specications
Platform • ATX Form Factor
• Solid Capacitor design
CPU • Supports 10th Gen Intel® CoreTM Processors (Socket 1200)
• Digi Power design
• 10Power Phase design
• Supports Intel® Turbo Boost Max 3.0 Technology
• Supports Intel® K-Series unlocked CPUs
• Supports ASRock BCLK Full-range Overclocking
Chipset • Intel® Z490
Memory • Dual Channel DDR4 Memory Technology
• 4 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
* 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.
• Supports ECC UDIMM memory modules (operate in non-
ECC mode)
• Max. capacity of system memory: 128GB
• Supports Intel® Extreme Memory Prole (XMP) 2.0
• 15μ Gold Contact in DIMM Slots
Expansion
Slot
• 2 x PCI Express 3.0 x16 Slots (PCIE2/PCIE4: single at x16
(PCIE2); dual at x16 (PCIE2) / x4 (PCIE4)*
* Supports NVMe SSD as boot disks
• 3 x PCI Express 3.0 x1 Slots
• Supports AMD Quad CrossFireXTMand CrossFireXTM
• 1 x M.2 Socket (Key E) with the bundled WiFi-802.11ax
module

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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
• Supports HDMI 1.4 with max. resolution up to 4K x 2K
(4096x2160) @ 30Hz
• 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 Port
• Supports 4K Ultra HD (UHD) playback with HDMI 1.4 Port
Audio • 7.1 CH HD Audio with Content Protection (Realtek ALC1200
Audio Codec)
• Premium Blu-ray Audio support
• Supports Surge Protection
• PCB Isolate Shielding
• Individual PCB Layers for R/L Audio Channel
• Nahimic Audio
LAN • Gigabit LAN 10/100/1000 Mb/s
• Giga PHY Intel® I219V
• Supports Wake-On-LAN
• Supports Lightning/ESD Protection
• Supports Energy Ecient Ethernet 802.3az
• Supports PXE

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Z490 Phantom Gaming 4/ax
Wireless
LAN
• Intel® 802.11ax WiFi Module
• Supports IEEE 802.11a/b/g/n/ax
• Supports Dual-Band (2.4/5 GHz)
• Supports WiFi6 802.11ax (2.4Gbps)
• 2 antennas to support 2 (Transmit) x 2 (Receive) diversity
technology
• Supports Bluetooth 5.1 + High speed class II
• Supports MU-MIMO
Rear Panel
I/O
• 2 x Antenna Ports
• 1 x PS/2 Mouse/Keyboard Port
• 1 x HDMI Port
• 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (ReDriver) (Supports
ESD Protection)
• 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (ReDriver) (Supports
ESD Protection)
• 2 x USB 3.2 Gen1 Ports (Supports ESD Protection)
• 2 x USB 2.0 Ports (Supports ESD Protection)
• 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED
LED)
• 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
17), NCQ, AHCI and Hot Plug*
* If M2_2 is occupied by a SATA-type M.2 device, SATA3_1 will
be disabled.
* If M2_2 is occupied by a PCIe-type M.2 device, SATA3_0 will
be disabled.
• 1 x Ultra M.2 Socket (M2_2), supports M Key type
2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI
Express module up to Gen3 x4 (32 Gb/s)**
** Supports Intel® OptaneTM Technolog y
** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit

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Connector • 1 x COM Port Header
• 1 x SPI TPM Header
• 1 x Power LED and Speaker Header
• 2 x RGB LED Headers
* Support in total up to 12V/3A, 36W LED Strip
• 2 x Addressable LED Headers
* Support in total up to 5V/3A, 15W LED Strip
• 1 x CPU Fan Connector (4-pin)
* e CPU Fan Connector supports the CPU fan of maximum
1A (12W) fan power.
• 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan
Speed Control)
* e CPU/Water Pump Fan supports the water cooler fan of
maximum 2A (24W) fan power.
• 4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan
Speed Control)
* e Chassis/Water Pump Fan supports the water cooler fan of
maximum 2A (24W) fan power.
* CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_
FAN3/WP and CHA_FAN4/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 4 pin 12V Power Connector
• 1 x Front Panel Audio Connector
• 1 x underbolt AIC Connector (5-pin) (Supports ASRock
underbolt 3 AIC R2.0 Card only)
• 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports
ESD Protection)
• 2 x USB 3.2 Gen1 Headers (Support 4 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 Core/Cache, GT, DRAM, PCH, VCCIO, VCCST,
VCCSA Voltage Multi-adjustment

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Z490 Phantom Gaming 4/ax
Hardware
Monitor
• Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa-
ter Pump Fans
• Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water
Pump Fans
• Quiet Fan (Auto adjust chassis fan speed by CPU tempera-
ture): CPU, CPU/Water Pump, Chassis/Water Pump Fans
• Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/
Water Pump Fans
• Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM,
VPPM, PCH, VCCSA, VCCST, VCCIO
OS • Microso® Windows® 10 64-bit
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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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.
Chapter 2 Installation

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Z490 Phantom Gaming 4/ax
2.1 Installing the CPU
1. Before you insert the 1200-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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4
5
3

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Z490 Phantom Gaming 4/ax
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.

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2.2 Installing the CPU Fan and Heatsink
1 2
CPU_FAN