MSI PRO B550-S, ATX, Socket AM4, 4 DIMM, Dual Channel DDR4 up to 4800+(OC)MHz, 1x PCIe 4.0 x16, 1x PCIe 3.0 x4, 1x PCIe 3.0 x1, 2x M.2 slots, 4x SATA3, 2x USB 3.2 Gen 2 (1x Type-C), 5x USB 3.2 Gen 1, 8x USB 2.0, 1x HDMI, 1G LAN, 7.1 Audio, 3Y