B550 AORUS MASTER (rev. 1.0), AMD Socket AM4: 3rd Gen Ryzen™/ 2nd Gen Ryzen™4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity) Support for DDR4 2133 MHz Up to 5400(O.C.) MHz, WIFI 802.11a/b/g/n/ac, supporting 2.4/5 GHz Dual-BandATX, BLUETOOTH 4.2,ATX

B550 AORUS PRO AC (rev. 1.x), AMD Socket AM4: 3rd Gen Ryzen™/ 2nd Gen Ryzen™, 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity), Support for DDR4 2133 MHz Up to 5400(O.C.) MHz, WIFI 802.11a/b/g/n/ac, supporting 2.4/5 GHz Dual-Band, BLUETOOTH 4.2, ATX

B550 AORUS ELITE V2 (rev. 1.0), AMD Socket AM4: 3rd Gen Ryzen™/ 2nd Gen Ryzen™,
4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity), Support for
DDR4 2133 MHz Up to 4733(O.C.) MHz, ATX

B550M DS3H (rev. 1.x), AMD Socket AM4: 3rd Gen Ryzen™/ 2nd Gen Ryzen™, 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity), Support for DDR4 2133 MHz Up to 4733(O.C.), Micro ATX