Supports 6 Channel, DDR4 2933/2666/2400/2133 RDIMM/LR DIMM, Intel Optane DC Persistent Memory in memory mode (Cascade Lake only), 6 dimm slots
Storage
IntelC621:12 x SATA3 ( 12 port from 3 mini SAS HD, 1x SATA DOM, 1 SATA 7pin, 1 x M.2 Broadcom SAS 3616 : 16 x SAS/SATA3 (from 4 mini SAS HD) or 4 x NVME ( by jumper setting)