Msi
Atx-Form-Factor Amd B550 Chipset Ryzen 5000 Support Ryzen 4000 G-Series Support Ryzen 3000 Support

MSI B550-A PRO: ATX, AMD B550, DDR4, 2x M.2

4.20 (2072)
Best price today
$170.3
Average price
$171.36
Price range
$170.3 – 172.42
Retailers
2 (2 In stock)
≈ 0.62% below avg
Best
newegg_com
4.20 (2072)
In stock
$170.3
Go to store
amazon_com
4.10 (40)
In stock
$172.42
Go to store
Prices last updated Jun 25, 2026

Highlights

  • ATX motherboard with AMD B550 chipset
  • Supports AMD Ryzen 5000 Series, 4000 G-Series, and 3000 Series processors
  • Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200G
  • DDR4 support with speeds up to 4400+ MHz in A-XMP OC mode
  • 4 PCIe slots including 2 PCIe x16 slots
  • 2 M.2 slots for fast storage expansion
  • 6 SATA III ports for additional drives
  • 8 USB ports for versatile peripheral connectivity

Description

The MSI B550-A PRO is an ATX motherboard built around the AMD B550 chipset for AMD Ryzen 5000 Series, 4000 G-Series, and 3000 Series processors. It supports DDR4 memory with speeds up to 4400+ MHz in A-XMP OC mode, with additional JEDEC-supported speeds for broad memory compatibility. For expansion, it includes 4 PCIe slots, including 2 PCIe x16 slots for graphics and add-in cards. Storage and connectivity are well covered with 2 M.2 slots, 6 SATA III ports, and 8 USB ports. Designed for straightforward setup, it suits gaming and high-performance PC builds that need flexible upgrade options.

Specifications

Storage Capacity 128 GB
Compatible Devices Personal Computer
Brand Name Msi
Manufacturer MSI
Brand MSI
Model Number B550-A PRO
Model Name B550-A PRO
Platform Not Machine Specific
Category motherboard
Model Family B550-A PRO
Condition New
Form Factor ATX
Cpu Model Ryzen 9

Price history

Reviews

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Msi

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(2072)
$170.3
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