ASUS ROG STRIX B550-A GAMING. Processor manufacturer: AMD, Processor socket: Socket AM4, Compatible processor series: AMD Ryzen™ 3. Supported memory types: DDR4-SDRAM, Maximum internal memory: 128 GB, Memory slots type: DIMM. Supported storage drive interfaces: PCI Express 3.0. Component for: PC, Motherboard form factor: ATX, Motherboard chipset family: AMD. BIOS type: UEFI, BIOS memory size: 256 Mbit