ATX (12' x 9.6') Supports 3rd Gen Intel Xeon Scalable Processors 8 DIMM slots (1DPC), supports DDR4 RDIMM, LRDIMM, RDIMM/LRDIMM-3DS, and Intel Optane Persistent Memory 4 PCIe4.0 x16, 3 PCIe4.0 x8 Supports 1 M.2 (PCIe3.0 x4), 1 M.2 (PCIe3.0 x1 or SATA 6Gb/s) 13 SATA 6Gb/s (including 1 port from M.2) 2 RJ45 (1GbE) by Intel i210 Remote management (IPMI)