Specifications: CPU: Support Intel Core 2 Quad, Core 2 Duo Extreme, Core 2 Duo, Pentium D and Pentium 4 processors with1066/800MHz FSB, Support Intel 2006FMB Conroe CPU. Chipset: Intel® 975X / Intel® ICH7R Express Chipset. Memory: 4 X 240-pin DIMM sockets support max. memory capacity 8GB, Supports Dual channel DDR2 800/667 Un-buffered / Non-ECC memory. Graphics: Supports Dual PCI-Express X16 slots (dual ATI® CrossFire™ Graphics). LAN: On-board PCI-E Gigabit LAN controller supports 10/100/ 1000M Ethernet. Audio: abit AudioMAX™ HD 7.1 CH, Supports Jack Sensing and S/PDIF In/Out, Dolby® Master Studio Certificated. Expansion Slots: 2xPCI-EX16, 2xPCI-EX1, 1xPCI, 1xAudioMAX. Internal I/O Connectors: 1 x Floppy port, 1 x UDMA 100/66/33 connector, 4 x SATA 3Gb/s connectors, 2 x USB 2.0 headers, 1 x FP-Audio header, 1 x CD-IN. Back Panel I/O: 1 x PS/2 Keyboard, 1 x PS/2 Mouse, 4 x USB 2.0, 1 x RJ-45 LAN. Serial ATA: ICH7R: 4 x SATA 3Gb/s supports Intel® Matrix Storage SATA RAID 0/1/0+1/5, Support SATA AHCI, providing native command queuing and native hot plug. Form Factor: ATX form factor 305 x 245mm, PCB Color: Black. RoHS: RoHS Compliancy. abit Engineered: abit µGuru Technology, abit AudioMAX HD 7.1 CH, abit OTES Technology, Quick Power & Reset Buttons, Low ESR and high ripple conductive polymer aluminum solid capacitors. Abit AW9D