ASUS ROG Strix B550-A Gaming Review & Specs

ASUS ROG Strix B550-A Gaming AM4 PCIe 4.0 2.5Gb LAN Dual M.2 ATX

ASUS ROG Strix B550-A Gaming AM4 PCIe 4.0 2.5Gb LAN Dual M.2 ATX


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In Stock
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(Used from $162.93) Last updated 9 minutes ago.
In Stock
$177.99 Buy
In Stock
$179.99 Buy
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AMD AM4 Socket And Pcie 4.0: The Perfect Pairing For 3Rd Gen AMD Ryzen Cpus
High-Performance Gaming Networking: 2.5 Gb LAN With ASUS Languard
Best Gaming Connectivity: Supports HDMI 2.1(4K@60HZ) And Displayport 1.2 Output, Featuring Dual M.2 Slots (Nvme SSD)—One With Pcie 4.0 X4 Connectivity, USB 3.2 Gen 2 Type-C Port And Thunderbolt 3 Header
Industry-Leading Gaming Audio & AI Noise Cancelling Mic Technology: High Fidelity Audio From A Supremefx S1220A Codec With DTS Sound Unbound And Sonic Studio III Draws You Deeper Into The Action. Communicate Clearly With ASUS AI Noise Cancelling Mic Technology.
DIY-Friendly Design: Includes Pre-Mounted I/O Shield, BIOS Flashback, Q-Leds And Safeslot
Unmatched Personalization: White ASUS-Exclusive Aura Sync RGB Lighting, Including RGB Headers And A Gen 2 Addressable RGB Header For Greater Customization
Renowned Software: Intuitive Dashboards For UEFI BIOS And ASUS AI Networking Make It Easy To Configure Gaming Builds
Robust Power Design: 12+2 Drmos Power Stages With High-Quality Alloy Chokes And Durable Capacitors Provide Reliable Power For The Last AMD High-Count-Core Cpus

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Specs Overview

  • ROG Strix B550-A Gaming
  • 90MB15J0-M0AAY0
  • 90MB15J0-M0EAY0
Release Date August 2020

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

Series ROG
Socket AM4
Form factor ATX
Chipset AMD B550
Supported Memory DDR4:
2133Mhz 2400Mhz 2666Mhz 2800Mhz 3000Mhz 3200Mhz 3466Mhz 3600Mhz 3866Mhz 4000Mhz 4133Mhz 4400Mhz 4600Mhz
* 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
* ECC memory support also depends on the CPU memory controller
Audio Chipset ROG SupremeFX High Definition Audio CODEC S1220A
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
  • 1 x Intel I225-V 2.5Gb Ethernet
  • 1 x DisplayPort
  • 1 x HDMI
  • 2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C)
  • 4 x USB 3.2 Gen 1
  • 2 x USB 2.0
  • 1 x Optical S/PDIF out
  • 1 x BIOS FlashBack Button(s)
  • 5 x Gold-plated audio jacks
Wireless LAN
PCI-Express x16 Slots 2
PCI-Express x4 Slots 0
PCI-Express x1 Slots 3
SATA 6 Gbps Ports 6
SATA Express Ports 0
M.2 Ports 2
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 0

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