? ATX Server Board with Xeon? Scalable processors ? DDR4 2666 MHz RDIMM up to 192 GB (6 DIMMs) ? Five PCIe x8 or two PCIe x16 and 1 PCIe x8 ? Intel? X557-AT2 dual 10GbE ports ? Eight SATA3 and one M.2 connectors (SATA / PCIe compatible) ? 0 ~ 60 °C ambient operation temperature range