ASUS PRIME Z490-A Review & Specs

ASUS Prime Z490-A LGA 1200 Dual M.2 USB 3.2 Front Panel Type-C Aura Sync RGB ATX

ASUS Prime Z490-A LGA 1200 Dual M.2 USB 3.2 Front Panel Type-C Aura Sync RGB ATX


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  • Intel LGA 1200 Socket: Designed To Unleash The Maximum Performance Of 10Th Gen Intel Core Processors
  • Enhanced Power Solution: 12+2 Drmos Power Stages, 6-Layer PCB, Procool Sockets, Alloy Chokes And Durable Capacitors For Stable Power Delivery
  • Comprehensive Cooling: VRM Heatsink, PCH Heatsink, Hybrid Fan Headers And Fan Xpert 4 Utility
  • Boosted Memory Performance: Careful Routing Of Traces And Vias, Plus Ground Layer Optimizations To Preserve Signal Integrity For Improved Memory Overclocking With ASUS Optimem II
  • Built For Productivity : Intel 2.5 Gb Ethernet, Front USB 3.2 Gen 2 Type-C And Thunderbolt 3 Header Support, Dual M.2 Slots
  • Personalization: ASUS-Exclusive Aura Sync RGB Lighting, Including RGB Headers And Gen 2 Addressable Headers
  • Immersive Gaming Audio: The Realtek S1200A Codec Offers Pristine Audio Quality To Draw You Deeper Into The Game Action Or To Enhance Your Favorite Music Tracks Or Videos.

Specifications Overview

  • PRIME Z490-A
  • 90MB1390-M0AAY0
  • 90MB1390-M0EAY0
Release Date May 2020

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

Socket LGA1200
Form factor ATX
Chipset Intel Z490
Supported Memory DDR4:
2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3333Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4400Mhz 4500Mhz 4600Mhz 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
Audio Chipset Realtek S1220A High Definition Audio CODEC
Audio Channels 8 Channels
LAN Chipset Intel I225-V
Max LAN Speed 10/100/1000/2500Mbps
SLI Support
CrossFire Support
RAID Support
Back I/O Ports
  • 4 x USB 3.2 Gen 2 port(s) (3 x Type-A + 1 x USB Type-C)
  • 2 x USB 3.2 Gen 1 port(s) (2 x Type-A)
  • 2 x USB 2.0 port(s) (2 x Type-A)
  • 1 x DisplayPort
  • 1 x HDMI port
  • 1 x Intel I225-V Ethernet port
  • 5 x Audio jacks
  • 1 x Optical S/PDIF out port
Wireless LAN
PCI-Express x16 Slots 3
PCI-Express x4 Slots 0
PCI-Express x1 Slots 3
SATA 6 Gbps Ports 6
SATA Express Ports 0
M.2 Ports 3
M.2 Devices support
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2230 - E Key
RAM Slots 4
Maximum Supported RAM 128GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 1

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