ASUS ROG Maximus XII Extreme Z490 (WiFi 6) LGA 1200 EATX

ASUS ROG Maximus XII Extreme Z490 (WiFi 6) LGA 1200 EATX

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  • Intel LGA 1200 Socket: Designed To Unleash The Maximum Performance Of 10Th Gen Intel Core Processors
  • Extreme Power Solution: Features 16 Infineon TDA21490 Power Stages, Each Rated To Handle 90 Amps, High-Quality Alloy Chokes And Durable Capacitors
  • Superb Thermal Design: Extra-Large Heatsinks For VRM, Chipset And M. 2 Slots, Solid Steel Backplate, Multiple Fan Headers And A Bundled Fan Extension Card, Features AI Cooling To Balance Thermals And Acoustics By Reducing Fan Speeds And Maintaining A 5 Celsius Delta
  • Fastest Gaming Connectivity: Intel Wifi 6 AX201 (802. 11 Ax), Dual Ethernet With Marvell Aqtion 10Gb And Intel 2. 5Gb Ethernet With Langaurd Technology, Quad M. 2 Slots With Dimm. 2, 2X USB 3. 2 Gen 2X2 Front Panel Connectors
  • Unmatched Personalization: 2” Livedash OLED, ASUS-Exclusive Aura Sync RGB Lighting, Including RGB Headers And Gen 2 Addressable Headers.
  • Industry-Leading Gaming Audio: High Fidelity Audio With The Supremefx S1220A Codec, DTS Sound Unbound And Sonic Studio III Draws You Deeper Into The Game Action
  • Exclusive ROG Bundle: 1X Fan Extension Card II , 1X Thunderboltex 3-TR Card, 1X Fan Bracket, 1X ROG Assistant Fan( 40Mm), 1X ROG Multi-Bit Screwdriver Come With The Motherboard Package

Specifications Overview

  • 90MB12J0-M0EAY0
Release Date May 2020

* First availability for purchase, it may not correspond to the actual market launch date.

Series ROG
Socket LGA1200
Form factor EATX
Chipset Intel Z490
Supported Memory DDR4
2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4400Mhz 4500Mhz 4600Mhz 4700Mhz 4800Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support No
Audio Chipset ROG SupremeFX High Definition Audio CODEC S1220
Audio Channels 8 Channels
Max LAN Speed 10Gbps + 10/100/1000/2500Mbps
SLI Support Yes
CrossFire Support Yes
RAID Support Yes
Back I/O Ports
  • 1 x USB 3.2 Gen 2x2 port(s) (1 x USB Type-C)
  • 3 x USB 3.2 Gen 2 port(s) (2 x Type-A + 1 x USB Type-C)
  • 6 x USB 3.2 Gen 1 port(s) (6 x Type-A)
  • 2 x USB 2.0 port(s) (2 x Type-A)
  • 1 x ASUS Wi-Fi Module
  • 1 x Intel I225-V Ethernet port
  • 1 x Marvell AQtion AQC107 10Gb Ethernet port
  • 5 x LED-illuminated audio jacks
  • 1 x Optical S/PDIF out port
  • 1 x BIOS FlashBack button
  • 1 x Clear CMOS button
Wireless LAN Yes
Wi-Fi Generation 6
PCI-Express x16 Slots 2
PCI-Express x4 Slots 1
PCI-Express x1 Slots 0
SATA 6 Gbps Ports 8
SATA Express Ports 0
M.2 Ports 4
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
RAM Slots 4
Maximum Supported RAM 128 GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 2
Onboard USB 3.2 Gen 2 2
Onboard USB 3.2 Gen 2x2 0

Expert reviews


If you need 12+ USB devices, quad M.2 storage, ultra-fast networking, the ability to rag your CPU 24/7 with confidence, ultra-fast RAM, and every moment of your day is a time vs money balance of graphics and rendering, then it may be the right motherboard for you. It may be dressed up for a party, but at its heart, this is a very serious worksta...


ASUS has once again created a behemoth of a board with the Maximus XII Extreme. The features are numerous and the performance is solid. If you are liquid cooling, this should be on your short list.


A stunning board, and one of the best Z490s available, but one that costs the same as a full, utterly respectable gaming PC.

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