ATX, Intel P35 Express, Core2 Quad, Core2 Duo, LGA775 (1333/1066/800MHz), DDR2 800/667 SDRAM, Intel PRO 10/100/1000, PCI Express16, 2xPCI, 3xPCI Express,12 USB 2.0, 2xIEEE-1394a, 7.1 Surround Sound, 6xSATA ports (3.0 Gb/s), 1xeSATA 

uATX, Intel® G33 Express Chipset featuring Intel® Graphics Media Accelerator 3100, supporting supporting Intel® Core™2 Quad, Intel® Core(TM)2 Duo Processor, Intel® Pentium® Dual-Core Processor,   Intel® Celeron® 400 Series  in the LGA775 socket, 1333/1066/800MHz System Bus, DDR2 800/667 SDRAM Memory, Intel® PRO 10/100/1000 Network Connection, PCI Express* x16, 1x PCI connectors, 2x PCI Express* x1 connector, up to 12 Hi-Speed USB 2.0 ports, up to two IEEE-1394a ports , Intel® High Definition Audio enabling 7.1 Surround Sound, 6xSATA ports (3.0 Gb/s), 1xeSATA