Asus Prime B550M-A WIFI II Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - Ryzen 3, Ryzen 5, Ryzen 7, Ryzen 9, Ryzen 5 Pro, Ryzen 7 PRO, Ryzen 9 PRO, Ryzen 3 PRO Processor Supported - 128 GB DDR4 SDRAM Maximum RAM - DIMM, UDIMM - 4 x PRI