SpecificationsMfr Part Number: S5500HCVRCPU: Dual Socket 1366 support Intel Xeon Processor 5500/5600 sequence; QPI 4.8GT/s ~ 6.4GT/sChipset: Intel 5500 & ICH10RMemory: 9x 240pin DDR3-1333 DIMMs, ECC, Registered / unbuffered Memory, max capacity upto 144GB (dependent on memory type)Slots: 3x PCI-Express 2.0 x8 slots(one runs on x4 mode); 1x PCI-Express 1.0 x8 slot (Run on x4, shared with optional SAS module); 1x PCI slotSATA: 6x SATA2 Ports, Support RAID 0, 1, 10Video: Server Engine LLC Pilot II Graphics ControllerLAN: 2x Intel 82575EB Gigabit LAN ControllersPorts: 10x USB 2.0 Ports(4 rear, 6 by headers); 1x Serial Port; 1x VGA Port; 2x RJ45 LAN PortsForm Factor: SSI EEB, 12 x 13 inchPackage: Retail