ASROCK Z790 PG-ITX/TB4 User manual

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your dealer for further information. For technical questions, please submit a
support request form at https://event.asrock.com/tsd.asp
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Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Motherboard Layout 6
1.4 I/O Panel 9
1.5 Block Diagram 11
1.6 802.11ax Wi-Fi 6E Module and ASRock WiFi 2.4/5/6 GHz
Antenna 12
Chapter 2 Installation 13
2.1 Installing the CPU 14
2.2 Installing the CPU Fan and Heatsink 16
2.3 Installing Memory Modules (DIMM) 17
2.4 Connecting the Front Panel Header 19
2.5 Installing the Motherboard 20
2.6 Installing SATA Drives 21
2.7 Installing a Graphics Card 23
2.8 Connecting Peripheral Devices 25
2.9 Connecting the Power Connectors 26
2.10 Power On 27
2.11 Onboard Headers and Connectors 28
2.12 Smart Switches 37
2.13 Post Status Checker 38

2.14 M.2 SSD Module Installation Guide (M2_1) 39
2.15 M.2 SSD Module Installation Guide (M2_2 and M2_3) 42

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Z790 PG-ITX/TB4
Chapter 1 Introduction
ank you for purchasing ASRock Z790 PG-ITX/TB4 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 Z790 PG-ITX/TB4 Motherboard (Mini-ITX Form Factor)
• ASRock Z790 PG-ITX/TB4 User Manual
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 1 x ASRock WiFi 2.4/5/6 GHz Antenna (Optional)
• 2 x ermal Pads for M.2 SSD (Optional)
• 3 x Screws for M.2 Sockets (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
• 10 Layer PCB
CPU • Supports 13th Gen & 12th Gen Intel® CoreTM Processors
(LGA1700)
• Supports Intel® Hybrid Technology
• Supports Intel® Turbo Boost Max 3.0 Technology
• Supports Intel® ermal Velocity Boost (TVB)
• Supports Intel® Adaptive Boost Technology (ABT)
Chipset • Intel® Z790
Memory • Dual Channel DDR5 Memory Technology
• 2 x DDR5 DIMM Slots
• Supports DDR5 non-ECC, un-buered memory up to
6800+(OC)*
• Max. capacity of system memory: 64GB
• Supports Intel® Extreme Memory Prole (XMP) 3.0
* Please refer to Memory Support List on ASRock's website for
more information. (http://www.asrock.com/)
Expansion
Slot
CPU:
• 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*
Chipset:
• 1 x Vertical M.2 Socket (Key E), supports type 2230 WiFi/BT
PCIe WiFi module and Intel® CNVio/CNVio2 (Integrated
WiFi/BT)
* Supports PCIe riser cards to extend one x16 slot to two x8
slots
* Supports NVMe SSD as boot disks
• 15μ Gold Contact in VGA PCIe Slot (PCIE1)
Graphics • Intel® UHD Graphics Built-in Visuals and the VGA outputs
can be supported only with processors which are GPU
integrated.
• Intel® XeGraphics Architecture (Gen 12)

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Z790 PG-ITX/TB4
• 1 x HDMI 2.1 TMDS Compatible, supports HDCP 2.3 and
max. resolution up to 4K 60Hz
• 1 x DisplayPort 1.4 with DSC (compressed), supports HDCP
2.3 and max. resolution up to 8K 60Hz / 5K 120Hz
• 2 x Intel® underboltTM 4, supports HDCP 2.3 and max.
resolution up to 8K 60Hz*
* Supports two 4K displays or one 8K display
* Only the CPU's embedded graphics can be displayed through
underbolt ports. If you want to display to a underbolt
monitor, please use CPU models with embedded graphics.
* underbolt graphics output may not be compatible with
certain Type-C monitors. Please use graphics card outputs
instead.
Audio • 7.1 CH HD Audio with Content Protection (Realtek
ALC4082 Audio Codec)
• Individual PCB Layers for R/L Audio Channel
• Impedance Sensing on Rear Out port
• Nahimic Audio
LAN • 2.5 Gigabit LAN 10/100/1000/2500 Mb/s
• Killer® E3100X
• Supports Killer LAN Soware
• Supports Killer DoubleShotTM Pro
Wireless
LAN
• 802.11ax Wi-Fi 6E Module
• Supports IEEE 802.11a/b/g/n/ac/ax
• Supports Dual-Band 2x2 160MHz with extended 6GHz
band* support
* Wi-Fi 6E (6GHz band) will be supported by Microso® Win-
dows® 11. e availability will depend on the dierent regula-
tion status of each country and region. It will be activated (for
supported countries) through Windows Update and soware
updates once available.
* A 6GHz compatible router is required for 6E functionality.
• 2 antennas to support 2 (Transmit) x 2 (Receive) diversity
technology
• Supports Bluetooth + High speed class II
• Supports MU-MIMO
• Supports Killer LAN Soware
• Supports Killer DoubleShotTM Pro

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USB • 2 x USB4 underboltTM 4 Type-C (Rear)
• 1 x USB 3.2 Gen2x2 Type-C (Front)
• 6 x USB 3.2 Gen2 Type-A (Rear)
• 2 x USB 3.2 Gen1 (Front)
• 2 x USB 2.0 (Front)
* All USB ports support ESD Protection
Rear Panel
I/O
• 2 x Antenna Ports
• 1 x HDMI Port
• 1 x DisplayPort 1.4
• 1 x Optical SPDIF Out Port
• 2 x USB4 underboltTM 4 Type-C Ports (40 Gb/s for USB4
protocol; 40Gb/s for underbolt protocol)*
• 6 x USB 3.2 Gen2 Type-A Ports (10 Gb/s)
• 1 x RJ-45 LAN Port
• 1 x Line Out Jack (Gold Audio Jack)
• 1 x Microphone Input Jack (Gold Audio Jack)
* Supports USB PD 3.0 up to 9V@3A (27W) / 5V@3A (15W)
charging
Storage CPU:
• 1 x Hyper M.2 Socket (M2_1, Key M), supports type 2280
PCIe Gen4x4 (64 Gb/s) mode*
Chipset:
• 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280
SATA3 6.0 Gb/s & PCIe Gen4x4 (64 Gb/s) modes*
• 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280
PCIe Gen4x4 (64 Gb/s) mode*
• 3 x SATA3 6.0 Gb/s Connectors
* Supports Intel® Volume Management Device (VMD)
* Supports NVMe SSD as boot disks
RAID • Supports RAID 0, RAID 1 and RAID 5 for SATA storage
devices
• Supports RAID 0, RAID 1 and RAID 5 for M.2 NVMe stor-
age devices

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Z790 PG-ITX/TB4
Connector • 1 x RGB LED Header*
• 1 x Addressable LED Header**
• 1 x CPU Fan Connector (4-pin)***
• 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan
Speed Control)****
• 1 x Chassis Fan Connector (4-pin)*****
• 1 x 24 pin ATX Power Connector (Hi-Density Power Con-
nector)
• 1 x 8 pin 12V Power Connector (Hi-Density Power Connec-
tor)
• 1 x Front Panel Audio Connector (15μ Gold Audio Connec-
tor)
• 1 x USB 2.0 Header (Supports 2 USB 2.0 ports)
• 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)
• 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
• 1 x Clear CMOS Button
* Supports in total up to 12V/3A, 36W LED Strip
** Supports in total up to 5V/3A, 15W LED Strip
*** CPU_FAN1 supports the fan power up to 1A (12W).
**** CPU_FAN2/WP supports the fan power up to 2A (24W).
**** CPU_FAN2/WP can auto detect if 3-pin or 4-pin fan is in
use.
***** CHA_FAN1 supports the fan power up to 1A (12W).
BIOS
Feature
• AMI UEFI Legal BIOS with GUI support
OS • Microso® Windows® 11 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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1.3 Motherboard Layout
Top Side View