Supermicro SuperServer SYS-5039A-I Single Socket R4 (LGA 2066) supports Intel® Xeon® W-2200 processor, Intel® Xeon® W-2100 processor Intel® C422 chipset Up to 512GB reg. ECC LRDIMM, up to DDR4-2666MHz; 8 DIMM slots 3 PCI-E 3.0 x16 (8/16/16, 48 lanes), 1 PCI-E 3.0 x4, M.2 Interface: 2 PCI-E 3.0 x4 M.2 Form Factor: 22110/2280 M.2 Key: M-Key (RAID 0,1 support) U.2 Interface: 2 PCI-E 3.0 x4 ALC 1220 7.1 HD Audio, 1 COM, 5GbE and GbE LAN, 2 USB 3.0 (front) 4 internal 3.5" drive bays 900W High Efficiency Power Supply