2 SuperDOM with built-in power. 2nd Gen Intel® Xeon® Scalable Processors and Intel® Xeon® Scalable Processors, Single Socket LGA-3647 (Socket P) supported, CPU TDP supports Up to 165W TDP. Intel® C621 Chipset. Up to 2TB 3DS ECC RDIMM, DDR4-2933MHz; Up to 2TB 3DS ECC LRDIMM, DDR4-2933MHz, in 8 DIMM slots;. Up to 1TB Intel Optane DC Persistent Memory in memory mode (Cascade Lake Only). Expansion slots:. 2 PCIe 3.0 x8 (in x16),. 4 PCIe 3.0 x8,. 1 PCIe 3.0 x4 (in x8). M.2 NGFF connector. M.2 Interface: PCIe 3.0 x4 and SATA. Form Factor: 2280, 22110. Key: M-Key. 2 GbE LAN ports. 8 SATA3 (6Gbps) ports. I/O: 1 VGA, 2 COM, TPM header. 5 USB 3.0 (2 rear, 1 Type-A, 2 via header), 8 USB 2.0 (2 rear, 6 via headers)