Chasis : 1U Rack CPU : 2 x Intel Xeon E5645, FCLGA1366,LGA1366 RAM : 4 x 4GB, Up to 288 GB RAM Slots : 18 dual inline, DDR3 HDD Bays : - Internal Storage (max) : 4 x 2.5” HDD, Up to 8 TB On board network : Internal Raid Controllers : SAS2008 PCI Slots : Slot 1 supports low-profile cards (PCI Express Gen2 x16 or PCI-X 1.0a 64-bit/133 MHz ), Slot 2 supports half-length, full-height cards (PCI Express Gen2 x16 or PCI-X 1.0a 64-bit/133 MHz) USB: rear 2 x USB 2.0, front 2 x USB 2.0 PSU: 2 x 675W