SALE OUT. ASRock AMD AM4 B550/4DDR4/6SATA3 | ASRock B550M Pro4 | Processor family AMD | Processor socket AM4 | DDR4 DIMM | Memory slots 4 | Supported hard disk drive interfaces SATA3, M.2 | Number of SATA connectors 6 | Chipset AMD B550 | Micro ATX | REFU