Support: One or two Intel Xeon Processor 5500 Series with a 4.8 GT/s 5.86 GT/s or 6.4 GT/s Intel QPI link interface and Thermal Design Power (TDP) up to 95 W. One or two Intel Xeon Processor 5600 Series with a 6.4 GT/s Intel QPI link interface and Thermal Design Power (TDP) up to 130 W Enterprise Voltage Regulator-Down (EVRD) 11.1 Memory: Support for 800/1066/1333 MT/s ECC registered (RDIMM) or unbuffered (UDIMM) DDR3 memory. 12 DIMMs total across 6 memory channels (3 channels per processor). Chipset: Intel 5520 Chipset IOH Intel 82801Jx I/O Controller Hub (ICH10R) I/O Control: External connections: DB-15 Video connector RJ-45 serial Port A connector Two RJ-45 Network Interface Connectors for 10/100/1000 Mb Four USB 2.0 connectors Internal connections: One USB 2x5 pin header supporting two USB 2.0 ports One low-profile USB 2x5 pin header to support low-profile USB solid state drives One DH-10 Serial Port B header Six SATA II connectors Two I/O module Mezzanine connectors for optional I/O Module support One RMM3 connector to support optional Intel Remote Management Module 3 SATA SW RAID 5 Activation Key Connector One SSI-EEB compliant front panel header One SSI-EEB compliant 24-pin main power connector One SSI-compliant 8-pin CPU power connector One SSI-compliant power supply SMBus connector System Fan Support: Six 4-pin fan headers supporting 2 processor fans 2 memory fans and up to 2 system fans One 26-pin custom system fan header for use in an Intel Server Chassis. Add-in Adapter Support: One riser slot supporting both full-height and low-profile 1U and 2U PCI Express riser cards Video: On-board ServerEngines LLC Pilot II Controller Integrated 2D Video Controller 32 MB DDR2 Memory