ASRock Rack B650D4U-2L2T/BCM Micro-ATX server motherboard

Micro-ATX EPYC and Ryzen server board

This Micro-ATX server motherboard fits single-socket AMD EPYC 4004 and AMD Ryzen 7000, 8000 and 9000 series processors in an LGA 1718 socket. It is built for compact 1U or 2U rackmount chassis where dual 10GbE and dual 1GbE ports are required. The board suits storage, virtualisation and edge workloads that need ECC memory and multiple PCIe 5.0 lanes in a small footprint.

PCIe 5.0 lanes and dual 10GbE limits

One PCIe 5.0 x16 slot and one PCIe 5.0 x4 slot connect directly to the CPU, while a single PCIe 4.0 x1 slot runs from the chipset. The M.2 M-key slot accepts 2280 and 2242 drives at PCIe 5.0 x4 speeds. Four SATA 6.0Gb/s ports provide additional drive connectivity. Memory runs at 5200 MHz with one DIMM per channel and drops to 3600 MHz when both channels are populated. Maximum capacity per DIMM is 48GB across four slots.

Check CPU cooler clearance and power delivery

Verify that your chosen processor TDP up to 170W can be cooled within the chassis height and airflow available. Confirm the power supply provides sufficient 12V current for the CPU and any add-in cards. Ensure DDR5 ECC or non-ECC UDIMMs match the qualified vendor list for stable operation at the rated speeds. The Aspeed AST2600 provides basic video output for headless management.