The MSI B550-A PRO is an ATX motherboard for compatible AMD AM4 desktop builds using DDR4 memory. It combines the B550 chipset with M.2 and SATA storage connections, PCIe expansion and Gigabit Ethernet.

Key features

• AMD B550 chipset and AM4 socket.
• Four DDR4 memory slots with dual-channel support.
• Two M.2 storage sockets.
• Six SATA 6Gb/s ports.
• Primary graphics slot supports PCIe 4.0 or 3.0 according to the installed processor.
• Realtek Gigabit Ethernet.

Compatibility

Check the exact processor against MSI's support list. Display outputs require a processor with integrated graphics. Installing a PCIe SSD in M2_2 makes PCI_E3 unavailable.

Specifications