The GIGABYTE B550M AORUS Elite AX D4 is a Micro-ATX motherboard designed for AMD Ryzen™ 5000, 4000, and 3000 series processors. It supports dual-channel ECC/non-ECC unbuffered DDR4 memory across four DIMM slots. The motherboard features a 5+3 phases pure digital VRM solution with Low RDS(on) MOSFETs for stable power delivery. Expansion options include an Ultra Durable™ PCIe 4.0 x16 slot and dual ultra-fast NVMe PCIe 4.0/3.0 M.2 connectors. Connectivity is enhanced with onboard Wi-Fi 6E (802.11ax) and Bluetooth 5.3.