Full Details from Amazon.com : http://www.amazon.com/gp/product/B00IYZ1FKW?tag=onigi-20
Genuine Dell MY171 F9394 DT029 HR002 Precision Workstation PWS690 Intel Dual CPU DDR2 Motherboard
Genuine Dell Motherboard with Tray for Precision Workstation 690
Chipset Intel 5000X Supported Processor Two Dual-Core Intel Xeon 5100 Series 64-Bit processors with up to 1333MHz FSB and 4MB L2 CacheCore with XD and VT capableand EIST All Intel Xeon processors support 64-Bit computing with Intel EM64T
Supported MemoryQuad-Channel DDR2 fully Buffered DIMM 8 DIMMs Slots Up to 64 GB DUAL Channel Audio 51 Audio Surround Sound Controller-Line-In Line-Out Microphone Video Support for PCI Express x16 graphics cards up to 150 watts and with up to 512MB graphics memory
Peripheral Interfaces 6 x 20 USB 2 x PS2 ports mouse and Keyboard 1 x parallel printer port 2 x serial ports 1 x 101001000 Gigabit Port 1 x firewire 1394a ports 2 - Audio Connections
Expansion Capability 3 PCI-Express Slot wired as X4 1 PCI-Express X16 Graphics slot 2 PCI-X slots 1 PCI 32 Bit Motherboard Part Number MY171 F9394 DT029 HR002