Key Features Intel® Xeon® Processor Skylake-W , Intel® Xeon® Processor W Family., Single Socket R4 (LGA 2066) supported, CPU TDP support Up to 140W Intel® C422 Up to 256GB Registered ECC RDIMM, DDR4-2666MHz; Up to 512GB Registered ECC LRDIMM, in 8 DIMM slots 3 PCI-E 3.0 x16, 1 PCI-E 3.0 x4***3xPCI-E3.0 x16 Slots(8/16/16 (Skylake-W 48 lanes), 1xPCI-E3.0x4 slots*** M.2 Interface: 2 PCI-E 3.0 x4 M.2 Form Factor: 22110 M.2 Key: M-Key (RAID 0,1 support) U.2 Interface: 2 PCI-E 3.0 x4 Intel® C422 controller for 6 SATA3 (6 Gbps) ports; RAID 0,1,5,10 *iRST enabled, only SATA2 to SATA5 support RAID. Single LAN with Intel® PHY I219LM LAN controller Single LAN with Aquantia 5G LAN chip AQC108