The MSI B550-A PRO is an ATX motherboard for compatible AMD AM4 Ryzen processors, with DDR4 memory support, PCIe 4.0 on supported CPUs and dual M.2 storage.
Key Specifications
- Model Name: B550-A PRO
- Warranty: 3 Years
- Chipset: AMD B550
- Memory: 4 × DDR4 DIMM slots; up to 128GB
- Expansion: PCIe 4.0 primary x16 slot with compatible CPU
- Storage: 2 × M.2 and 6 × SATA 6Gb/s
- Networking: Gigabit Ethernet
- Form Factor: ATX
Compatibility Notes
- Check MSI’s CPU support list and BIOS version before installing the selected processor.
- PCIe generation and memory speeds depend on CPU and configuration.
- No onboard Wi-Fi is listed.










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