ASROCK Z790 Steel Legend WiFi User manual

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://www.asrock.com; or you may contact 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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e-mail: [e-mail]
ASRock EUROPE B.V.
e-mail: [e-mail]
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e-mail: sa[email protected]
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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 10
1.5 Block Diagram 12
1.6 802.11ax Wi-Fi 6E Module and ASRock WiFi 2.4/5/6 GHz
Antenna 13
1.7 Graphics Card Holder 14
Chapter 2 Installation 15
2.1 Installing the CPU 16
2.2 Installing the CPU Fan and Heatsink 18
2.3 Installing Memory Modules (DIMM) 19
2.4 Connecting the Front Panel Header 21
2.5 Installing the Motherboard 22
2.6 Installing SATA Drives 23
2.7 Installing a Graphics Card 25
2.8 Connecting Peripheral Devices 27
2.9 Connecting the Power Connectors 28
2.10 Power On 29
2.11 Jumpers Setup 30
2.12 Onboard Headers and Connectors 31

2.13 Post Status Checker 48
2.14 M.2 SSD Module Installation Guide (M2_1 and M2_2) 49
2.15 M.2 SSD Module Installation Guide (M2_3 and M2_4) 52
2.16 M.2 SSD Module Installation Guide (M2_5) 55
2.17 Change Screen Brightness for eDP in Windows® 57

1
Z790 Steel Legend WiFi
Chapter 1 Introduction
ank you for purchasing ASRock Z790 Steel Legend WiFi 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 Steel Legend WiFi Motherboard (ATX Form Factor)
• ASRock Z790 Steel Legend WiFi User Manual
• 2 x Serial ATA (SATA) Data Cables (Optional)
• 1 x ASRock WiFi 2.4/5/6 GHz Antenna (Optional)
• 4 x Screws for M.2 Sockets (Optional)
• 1 x Graphics Card Holder (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 mother-
board, 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.

2
1.2 Specications
Platform • ATX Form Factor
• 2oz Copper 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
• 4 x DDR5 DIMM Slots
• Supports DDR5 non-ECC, un-buered memory up to
6800+(OC)*
• Max. capacity of system memory: 128GB
• 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 PCIe 4.0 x16 Slot (PCIE2), supports x4 mode*
• 1 x PCIe 3.0 x16 Slot (PCIE3), supports x2 mode*
• 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe
WiFi module and Intel® CNVio/CNVio2 (Integrated WiFi/
BT)
* If M2_2 is occupied, PCIE1 will downgrade to x8 mode.
* Supports NVMe SSD as boot disks
• Supports AMD CrossFireTM
• 15μ Gold Contact in VGA PCIe Slot (PCIE1)

3
Z790 Steel Legend WiFi
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)
• 1 x eDP 1.4, supports max. resolution up to Full HD 60Hz
• 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
Audio • 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
• Nahimic Audio
LAN • 2.5 Gigabit LAN 10/100/1000/2500 Mb/s
• Dragon RTL8125BG
• 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
Wireless
LAN
• 802.11ax Wi-Fi 6E Module
• Supports IEEE 802.11a/b/g/n/ac/ax
• Supports Dual-Band 2x2 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

4
USB • 1 x USB 3.2 Gen2x2 Type-C (Front)
• 1 x USB 3.2 Gen2 Type-C (Rear)
• 1 x USB 3.2 Gen2 Type-A (Rear)
• 12 x USB 3.2 Gen1 (8 Rear, 4 Front)
• 3 x USB 2.0 (3 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
• 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)
• 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)
• 8 x USB 3.2 Gen1 Ports
• 1 x RJ-45 LAN Port
• HD Audio Jacks: Rear Speaker / Central / Bass / Line in /
Front Speaker / Microphone (Gold Audio Jacks)
Storage CPU:
• 1 x Hyper M.2 Socket (M2_1, Key M), supports type
2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
• 1 x Blazing M.2 Socket (M2_2, Key M), supports type
2260/2280 PCIe Gen5x4 (128 Gb/s) mode*
Chipset:
• 1 x Hyper M.2 Socket (M2_3, Key M), supports type
2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
• 1 x Hyper M.2 Socket (M2_4, Key M), supports type
2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
• 1 x Hyper M.2 Socket (M2_5, Key M), supports type
2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
• 8 x SATA3 6.0 Gb/s Connectors
* Supports Intel® Volume Management Device (VMD)
* Supports NVMe SSD as boot disks
* If M2_2 is occupied, PCIE1 will downgrade to x8 mode.
* Either M2_1 or M2_2 can be used at a time.

5
Z790 Steel Legend WiFi
RAID • Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA
storage devices
• Supports RAID 0, RAID 1 and RAID 5 for M.2 NVMe stor-
age devices
Connector • 1 x eDP Signal Connector
• 1 x SPI TPM Header
• 1 x Power LED and Speaker Header
• 1 x RGB LED Header*
• 3 x Addressable LED Headers**
• 1 x CPU Fan Connector (4-pin)***
• 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan
Speed Control)****
• 5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan
Speed Control)*****
• 1 x 24 pin ATX Power Connector (Hi-Density Power Con-
nector)
• 2 x 8 pin 12V Power Connectors (Hi-Density Power Connec-
tor)
• 1 x Front Panel Audio Connector (15μ Gold Audio Connec-
tor)
• 1 x underbolt AIC Connector (5-pin) (Supports ASRock
underbolt 4 AIC Card)
• 2 x USB 2.0 Headers (Support 3 USB 2.0 ports)
• 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
• 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
* Supports in total up to 12V/3A, 36W LED Strip
** Support 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).
***** CHA_FAN1~5/WP support the fan power up to 2A (24W).
***** CPU_FAN2/WP and CHA_FAN1~5/WP can auto detect
if 3-pin or 4-pin fan is in use.
BIOS
Feature
• AMI UEFI Legal BIOS with GUI support
OS • Microso® Windows® 11 64-bit

6
Certica-
tions
• FCC, CE
• ErP/EuP ready (ErP/EuP ready power supply is required)
• CEC Tier II ready
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