MSI P6N SLI Platinum LGA 775 NVIDIA nForce 650i SLI ATX Intel Motherboard - Retail 4 DIMMs with DDR2 800+ up to 8GB 2 PCI-E 16x (operate at dual 8x when SLI enabled), 1 PCI-E X, 3 PCI, 8 USB HD 7.1 CH Onboard Audio Integrated High-Speed USB 2.0 controller, 480Mb/sec, 8 ports 4 Serial ATA II ports with transfer rate up to 3Gb/s and support RAID (0,1, 0+1 & 5)