ASUS Prime B550M-A WiFi II

ASUS Prime B550M-A WiFi II AM4 PCIe 4.0 WiFi 6 ECC Memory 1Gb LAN HDMI 2.1/D-Sub 4K@60Hz Micro ATX

ASUS Prime B550M-A WiFi II AM4 PCIe 4.0 WiFi 6 ECC Memory 1Gb LAN HDMI 2.1/D-Sub 4K@60Hz Micro ATX

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  • AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs
  • Ultrafast Connectivity: 1x PCIe 4.0 x16 SafeSlot, WiFi 6 (802.11ax), 1Gb LAN, dual M.2 slots (NVMe SSD)—one with PCIe 4.0 x4 connectivity, USB 3.2 Gen 2 Type-A , HDMI 2.1 (4K@60HZ), D-Sub & DVI
  • Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2 utility
  • 5X Protection III: all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O
  • Boosted Memory Performance: ASUS OptiMem proprietary trace layout allows memory kits to operate at higher frequencies with lower voltages to maximize system performance.
  • Enhanced Power Solution: 8+1 DrMOS power stages with high-quality alloy chokes and durable capacitors to provide reliable power for the last AMD high-count-core CPUs
  • Aura Sync RGB: Synchronizable LED effects across a wide range of compatible PC gear, plus RGB LED and Addressable Gen 2 RGB headers for greater customization

Specifications Overview

Model
  • PRIME B550M-A WIFI II
  • 90MB19X0-M0AAY0
  • 90MB19X0-M0EAY0
Release Date July 2022

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

Socket AM4
Form factor Micro ATX
Chipset AMD B550
Supported Memory DDR4
2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4200Mhz 4266Mhz 4333Mhz 4400Mhz 4600Mhz 4800Mhz 4866Mhz
* 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 7.1 Surround Sound High Definition Audio CODEC
Audio Channels 7.1 Channels
LAN Chipset Realtek 1Gb Ethernet
Max LAN Speed 10/100/1000Mbps
SLI Support
CrossFire Support
RAID Support
Back I/O Ports
  • 2 x USB 3.2 Gen 2 ports (2 x Type-A)
  • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
  • 1 x D-Sub port
  • 1 x DVI-D port
  • 1 x HDMI port
  • 1 x Wi-Fi Module
  • 1 x Realtek 1Gb Ethernet port
  • 3 x Audio jacks
  • 1 x PS/2 Keyboard/Mouse combo port
Wireless LAN
Wi-Fi Generation 6
PCI-Express x16 Slots 1
PCI-Express x4 Slots 0
PCI-Express x1 Slots 2
SATA 6 Gbps Ports 4
SATA Express Ports 0
M.2 Ports 2
M.2 Devices support
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2242 / 2260 / 2280 - M Key
RAM Slots 4
Maximum Supported RAM 128 GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 0
Onboard USB 3.2 Gen 2x2 0


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