Full Details from Amazon.com : http://www.amazon.com/gp/product/B00456UPO6?tag=onigi-20

Dell Optiplex 745 Mini Tower Main System Motherboard (TY565 KW626 RF703 HR330)

CHIPSET Intel Q965 Express SUPPORTED PROCESSORS Intel Pentium 4 Pentium D Celeron Core Socket 775
SUPPORTED MEMORY 4 DIMM slots supporting up to 8 GB RAM VIDEO Integrated onboard video
AUDIO Integrated Audio Sound Controller ADI 1983 High Definition Audio
EXPANSION CAPABILITY 1 PCI-E X16 slot supports x16 x8 x4 and x1 modescards
Motherboard Part Numbers TY565 HR330 KW626