ASUS PRIME B550M-K AM4 Micro-ATX Motherboard – Memory Support: 4x DDR4 DIMM Slots (128GB, 4400 MHz O.C) – Expansion Slots: 1x PCIe 4.0 x16, 2x PCIe 3.0 x1 – Storage Support: 2x M.2 Socket 3 & 4x SATA 6Gb/s Connectors – Network: Realtek RTL8111H 1Gb Ethernet – Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC – Rear USB Ports: 2x USB-A 3.2 Gen 2 & 4x USB-A 3.2 Gen 1 – PRIME B550M-K – 3 Years Limited Warranty