9.1 Expert Score

ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX

Add to compareAdded to compare0
In stock
Bizgamers Choice for Brand:

Lowest Prices as from:
Original price was: $129.99.Current price is: $109.99.

About Item
  • 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


Product Information





Memory Speed

‎2133 MHz



Storage Capacity

128 GB

Connectivity Technology

‎802.11a/b/g/n/ac, 802.11ax

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Brand

AMD B550

Operating System

‎Windows 10

Product Dimensions

10.8 x 10.5 x 2.8 inches


‎2.55 pounds

Product Review

9.1Expert Score
ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX: Expert Review
Powered by 3rd Gen AMD® Ryzen™ processors, the ASUS Prime B550M-A WiFi II delivers next-generation speeds with PCIe 4.0, WiFi 6 and 1Gb LAN. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the ASUS Prime B550M-A WiFi 6 provides mainstream PC users and DIY PC builders with a perfect all-around foundation via intuitive software and firmware features.
Value for money
For gaming
Easy to use
Tech Support
  • Cheap
  • Good audio
  • Three video output
  • VRMs run HOT with 3900X
  • No USB Type-C ports
  • Four SATA ports

Product Description


ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity.

PRIME B550M-A – AMD B550 (Ryzen AM4) motherboard in micro ATX format with dual M.2, PCIe 4.0, 1Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gb/s, USB 3.2 Gen 2 Type-A and Aura Sync RGB connector

  • AMD AM4 Socket for 3rd Gen Ryzen™ Processors
  • Full cooling: VRM heatsink, PCH heatsink, and FanXpert 2+
  • Blazing-fast connectivity: dual M.2, PCIe 4.0, 1Gb Ethernet and USB 3.2 Gen.2 Type-A
  • Aura Sync RGB: addressable Gen.2 connector for RGB LED strips, can be synchronized with compatible peripherals

Prime B550M-A

ASUS Prime motherboards were designed to harness the full potential of the new 10th Gen AMD Ryzen processors. In addition to being equipped with a solid design for the power supply and innovative solutions for the cooling, they offer users and PC builders intelligent options for improving performance, configurable via intuitive software and firmware.

VRM Heatsink and Thermal Protectors

The two large VRM heatsinks with thermal protectors improve heat transfers from the MOSFETS and coils to improve board cooling performance.

Ideal design for cooling

Prime B550s feature the best cooling control settings, configurable via Fan Xpert 4 or our UEFI BIOS.

  • Multiple Temperature Sources: Each connector can be configured to monitor and react to three thermal sensors.
  • 4-pin PWM/DC fan: Each chassis fan connector is compatible with both PWC and DC modes.

Accelerate with the built-in M.2 slot

M.2 PCIe 4.0 (up to 64 Gbps)

The two M.2 PCIe 4.0 slots are compatible up to version 22110 and support RAID configurations for NVMe SSDs, resulting in a considerable boost in performance. Create a RAID configuration with up to two PCIe 4.0 devices to experience the fastest transfers with a 3rd Gen AMD® Ryzen™ platform.

USB 3.2 Gen 2 Type-A

Prime B550s feature multiple connectors including two rear USB 3.2 Gen.2 Type-A ports that support PC setups with multiple peripherals (subject to case compatibility).

Addressable RGB Gen.2 Connector

The Prime B550M-A’s addressable RGB Gen.2 connectors are now able to detect the number of LEDs on 2nd generation addressable RGB devices so that software can automatically customize lighting effects based on connected devices. The new connectors are also backward compatible with existing Aura RGB devices.

Additional information
Reviews (0)

User Reviews

0.0 out of 5
Write a review

There are no reviews yet.

Be the first to review “ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX”

Your email address will not be published. Required fields are marked *