Asus PRIME B450M-A/CSM

This is an Micro-ATX board on the B450M chipset, AM4 socket. Expansion includes 2 M.2 slots and 2 PCIe slots. Memory support covers 4 DDR4 slots up to 64GB total. Pick the board for its socket before anything else — chipset niceties come after.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Warranty coverage follows ASUS's standard policy — confirm regional terms on the listing. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build. If this motherboard is not quite the right fit, the category page lists close alternatives at similar prices for a quick side-by-side comparison.