Inno3d SL7I680A nForce 680i SLI Motherboard S775 CPU support: LGA775 socket for Intel Core2 Extreme/Core2 Duo/Pentium Extreme/Pentium D/Pentium 4/Celeron D Processors 1333/1066/800MHz FSB Chipset: Northbridge: nVidia MCP 680i SLI Memory: 4 x 240-pin DDR2 DIMM Slots Support DDR 400/533/667/800 DDR2 SDRAM Maximum capacity: 8GB Expansion slot: 2 X PCI-Express x16 slot 1 X PCI-Express x16 compatible 2 X PCI-Express x1 slot 2 X PCI slots Audio: Realtek ALC885 8 channels high definition audio codec LAN: NVIDIA nForce 680i SLI built-in dual Gigabit MAC with external Marvell PHY Internal Connectors: 1 X Ultra ATA33/66/100/133 IDE connectors 6 X Serial ATAII 3.0Gb/s connectors (Support Raid 0, 1, 0+1, 5) 1 X Floppy connectors 2 X USB2.0/1.1 Connectors for additional 4 X USB2.0/1.1 Ports 5 X CPU/Chassis FAN connectors 24-pin ATX power connector 8-pin power connector 1 X Serial Port connector Front panel audio connector CD-in header Rear Panel I/O: 1 x Optical Output Audio Jack: Speaker out/Line in/Mic in 1 X IEEE 1394a 6 X USB2.0/1.1 Ports 1 X PS/2 Keyboard Port; 1 X PS/2 Mouse Port; 2 X RJ45 Port O.S. Supported: Microsoft Windows 2000/XP/XP 64-bit/2003/Vista Form Factor: ATX