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Version 1.0 
Published September 2022

Copyright©2022 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 identification or explanation and to the owners’ benefit, without intent to 
infringe.

 

Disclaimer:

Specifications 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 fitness for a particular 

purpose.
In no event shall ASRock, its directors, officers, employees, or agents be liable for 

any indirect, special, incidental, or consequential damages (including damages for 

loss of profits, 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.

 

This 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.

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or 

television reception, which can be determined by turning the equipment off and on, the 

user is encouraged to try to correct the interference by one or more of the following 

measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Summary of Contents for Z790 PG-ITX/TB4

Page 1: ......

Page 2: ...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 ASRock Incorporation e mail info asrock com tw...

Page 3: ...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...

Page 4: ...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...

Page 5: ...ASRock WiFi 2 4 5 6 GHz Antenna Optional 2 x Thermal Pads for M 2 SSD Optional 3 x Screws for M 2 Sockets Optional Because the motherboard specifications and the BIOS software might be updated the co...

Page 6: ...system memory 64GB Supports Intel Extreme Memory Profile 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 S...

Page 7: ...k 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 Software...

Page 8: ...ort 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 PC...

Page 9: ...1 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 Feat...

Page 10: ...English 6 1 3 Motherboard Layout Top Side View...

Page 11: ...English 7 Z790 PG ITX TB4 Back Side View...

Page 12: ...ts DDR5_A1 DDR5_B1 7 Post Status Checker PSC 8 Clear CMOS Button CLRCBTN1 9 ATX Power Connector ATXPWR1 10 RGB LED Header RGB_LED1 11 System Panel Header PANEL1 12 USB 3 2 Gen1 Header USB32_7_8 13 SAT...

Page 13: ...3 2 Gen2 Type A Port USB32_5 5 Line Out Jack 11 USB 4 0 ThunderboltTM 4 Type C Port TB_1 6 Optical SPDIF Out Port 12 HDMI Port ACT LINK LED SPEED LED LAN Port There are two LEDs on each LAN port Pleas...

Page 14: ...1 channel Configuration Channel Port Function 2ch Line Out Jack Rear Panel Front speaker out 4ch Pink Mic Front Panel Rear speaker out 5 1ch Microphone Input Jack Rear Panel Central Subwoofer speaker...

Page 15: ...Flash ROM 128Mb M2_1 PCIe Gen4 x4 Gen4 x4 Gen3 x1 E3100X 2 5G LAN Gen4 x4 M2_2 PCIe Gen4 x4 SATA 6 port 2 port Front USB 3 2 Gen2x2 Type C 20Gb s 1 port CNVi M2_WiFi Gen3 x1 480Mb s Display Port1 DDIA...

Page 16: ...tures Smart Ready technology that adds a whole new class of functionality into the mobile devices BT also includes Low Energy Technology and ensures extraordinary low power consumption for PCs The tra...

Page 17: ...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 Als...

Page 18: ...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 th...

Page 19: ...English 15 Z790 PG ITX TB4 5 7 6 4 Please save and replace the cover if the processor is removed The cover must be placed if you wish to return the motherboard for after service...

Page 20: ...English 16 2 2 Installing the CPU Fan and Heatsink 1 2 C P U _ F A N...

Page 21: ...me brand speed size and chip type DDR5 DIMM pairs 2 It is unable to activate Dual Channel Memory Technology with only one memory module installed 3 It is not allowed to install a DDR DDR2 DDR3 or DDR4...

Page 22: ...English 18 1 2 3...

Page 23: ...4 Connecting the Front Panel Header A B C D 1 2 32 5 6 5 6 7 6 3 2 5 3 2 5 3 1 Power SW RESET SW HDD LED HDD LED 1 2 9 10 RESET SW Power SW Power LED Power LED A B C D PANEL1 HDD LED RESET SW System P...

Page 24: ...English 20 2 5 Installing the Motherboard...

Page 25: ...English 21 Z790 PG ITX TB4 2 6 Installing SATA Drives 1 2 Optical Drive SATA Drive SATA Data Cable...

Page 26: ...English 22 3 4 SATA Power Connector SATA Data Connector...

Page 27: ...English 23 Z790 PG ITX TB4 2 7 Installing a Graphics Card 1 CLICK...

Page 28: ...width graphics cards Supports PCIe riser cards to extend one x16 slot to two x8 slots Before installing an expansion card please make sure that the power supply is switched off or the power cord is u...

Page 29: ...English 25 Z790 PG ITX TB4 2 8 Connecting Peripheral Devices...

Page 30: ...English 26 2 9 Connecting the Power Connectors 7 3 5 7 9...

Page 31: ...English 27 Z790 PG ITX TB4 2 10 Power On 2 3 4 1...

Page 32: ...the chassis front panel Press the reset button to restart the computer if the computer freezes and fails to perform a normal restart PLED System Power LED Connect to the power status indicator on the...

Page 33: ...These three SATA3 connectors support SATA data cables for internal storage devices with up to 6 0 Gb s data transfer rate USB 2 0 Header 9 pin USB1_2 see p 6 No 18 There is one header on this motherbo...

Page 34: ...1 see p 6 No 15 There is one Front Panel Type C USB 3 2 Gen2x2 Header on this motherboard This header is used for connecting a USB 3 2 Gen2x2 module for additional USB 3 2 Gen2x2 ports 1 IntA_PB_D Dum...

Page 35: ...KER1 see p 6 No 17 Please connect the chassis speaker to this header High Definition Audio supports Jack Sensing but the panel wire on the chassis must support HDA to function correctly Please follow...

Page 36: ...e black wire to the ground pin CPU Fan Connector 4 pin CPU_FAN1 see p 6 No 3 This motherboard provides a 4 Pin CPU fan Quiet Fan connector If you plan to connect a 3 Pin CPU fan please connect it to P...

Page 37: ...ctor If you plan to connect a 3 Pin CPU water cooler fan please connect it to Pin 1 3 ATX Power Connector 24 pin ATXPWR1 see p 6 No 9 This motherboard provides a 24 pin ATX power connector To use a 20...

Page 38: ...rd provides a 8 pin ATX 12V power connector To use a 4 pin ATX power supply please plug it along Pin 1 and Pin 5 Warning Please make sure that the power cable connected is for the CPU and not the grap...

Page 39: ...g orientation otherwise the cable may be damaged 2 Before installing or removing your RGB LED cable please power off your system and unplug the power cord from the power supply Failure to do so may ca...

Page 40: ...in the wrong orientation otherwise the cable may be damaged 2 Before installing or removing your RGB LED cable please power off your system and unplug the power cord from the power supply Failure to...

Page 41: ...switch Clear CMOS Button allowing users to quickly clear the CMOS values Clear CMOS Button CLRCBTN1 see p 6 No 8 Clear CMOS Button allows users to quickly clear the CMOS values CLRCBTN1 This function...

Page 42: ...ost Status Checker PSC diagnoses the computer when users power on the machine It emits a red light to indicate whether the CPU memory VGA or storage is dysfunctional The lights go off if the four ment...

Page 43: ...place mPCIe and mSATA The Hyper M 2 Socket M2_1 Key M supports type 2280 PCIe Gen4x4 64 Gb s mode Installing the M 2 SSD Module Step 1 Prepare a M 2 SSD module and the screw Step 2 Depending on the PC...

Page 44: ...f the M 2 heatsink before you install a M 2 SSD module Step 4 Align and gently insert the M 2 SSD module into the M 2 slot Please be aware that the M 2 SSD module only fits in one orientation Step 5 T...

Page 45: ...h a screwdriver to secure the M 2 heatsink into place Please do not overtighten the screw as this might damage the module and M 2 heatsink For the latest updates of M 2 SSD module support list please...

Page 46: ...y M supports type 2280 SATA3 6 0 Gb s PCIe Gen4x4 64 Gb s modes The Hyper M 2 Socket M2_3 Key M supports type 2280 PCIe Gen4x4 64 Gb s mode Installing the M 2 SSD Module Step 1 Prepare a M 2 SSD modul...

Page 47: ...re that the M 2 SSD module only fits in one orientation Step 4 Tighten the screw with a screwdriver to secure the module into place Please do not overtighten the screw as this might damage the module...

Page 48: ...dule Step 7 Remove the plastic liner from the thermal pad Step 8 Install the motherboard into the computer case with the thermal pad on the back side of the motherboard adhered to the chassis Note The...

Page 49: ...s 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 produc...

Page 50: ...s trademarks or other intellectual property rights Transfer of the license ter minates Licensee s right to use the Software DISCLAIMER OF WARRANTY The Software is provided AS IS without warranty of an...

Page 51: ...is exported from the U S A or re exported from a foreign destina tion by Licensee Licensee will ensure that the distribution and export re export or import of the Software complies with all laws regu...

Page 52: ...rnia 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 hazardouswa...

Page 53: ...ck disclose the relevant information based on regulation requirements Please refer to https www asrock com general about asp cat Responsibility for informa tion disclosure based on regulation requirem...

Page 54: ...ansmit 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...

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