Micro-ATX; Intel X550-BT2, DDR4 2933/2666/2400/2133 RDIMM/LR DIMM, Intel® Optane™ DC Persistent Memory in memory mode (Cascade Lake only), 6 dimm slots, RJ45, VGA, USB 3.2
Asrock EPC621D6U-2T, Intel, LGA 3647 (Socket P), Intel® Xeon®, DDR4-SDRAM, 64 GB, DIMM
Asrock EPC621D6U-2T. Processor manufacturer: Intel, Processor socket: LGA 3647 (Socket P), Compatible processor series: Intel® Xeon®. Supported memory types: DDR4-SDRAM, Maximum internal memory: 64 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, SATA. Component for: PC, Motherboard form factor: micro ATX, Motherboard chipset family: Intel. BIOS type: AMI, BIOS memory size: 256 Mbit