Supermicro Super Server Barebone System Components SYS-5018A-MLTN4 Intel Atom processor C2550, Sock, FCBGA 1283, 14W 4-Core 2x 3.5" Fixed SATA3 HDD bays or 4x 2.5" SATA2 HDD optional 1x PCI-E 2.0 x8, 1x PCI-E 2.0 x4 Up to 64GB DDR3 1600MHz ECC or non-ECC UDIMM in 4 DIMM sockets 200W Low-noise power supply w/ PFC Intel Atom processor C2550, SoC FCBGA 1283, 14W 4-Core Intel System-on-Chip design 2x 3.5" Fixed SATA3 HDD bays or 4x 2.5" SATA2 HDD optional