AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support.Specification:CPUAMD AM4 Socket 3rd Gen AMD Ryzen Processors*Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200GChipsetAMD B550Memory4 x DIMM, Max. 128GB, 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered MemoryOnboard Graphics Outputs1 x D-Sub1 x DVI-D1 x HDMI 2.1(4K@60HZ)PCI Slots1 x PCIe 4.0 x16 (x16 mode)2 x PCIe 3.0 x1StorageTotal supports 2 x M.2 slots and 4 x SATA 6Gb/s ports3rd Gen AMD Ryzen Processors:1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices supportAMD B550 Chipset:1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support4 x SATA 6Gb/s port(s)Support Raid 0, 1, 10NetworkingRealtek GbE LAN chip (1000 Mbit/100 Mbit)AudioRealtek ALC887 codec High Definition Audio 7.1-channelConnectivityRear USB Port (Total 6)2 x USB 3.2 Gen 2 port(s) (2 x Type-A)4 x USB 3.2 Gen 1 port(s) (4 x Type-A)Front USB Port (Total 6)2 x USB 3.2 Gen 1 port(s) (2 x Type-A)4 x USB 2.0 port(s) (4 x Type-A)Internal Ports1 x CPU Fan connector(s)1 x CPU OPT Fan connector(s)2 x Chassis Fan connector(s)2 x Aura RGB Strip Headers1 x Addressable Gen 2 header(s)1 x SPI TPM header1 x S/PDIF out header(s)1 x 24-pin EATX Power connector(s)1 x 8-pin EATX 12V Power connectors1 x Front panel audio connector(s) (AAFP)1 x Clear CMOS jumper(s)1 x System panel connector1 x COM port header1 x Speaker connectorForm FactorMicro ATX Form Factor; 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)WarrantyThree Year Manufacturer Warranty