Perfomance ASUS Motherboard Supports AMD Socket AM2 Sempron LE Sempron Athlon 64 Athlon X2 Phenom AMD 770 SB600 chipset FSB 1600 M Ts 2000 M Ts upto 5200 M Ts Supports DDR2 533 667 800 1066 AM2CPU only upto 8GBExpansion 1 x PCI Express 2.0 x 162 x PCI Express x 1 3 x 32-bit PCI 2.28-Channel On Board Audio 1 x Coaxial SPDIF output 1 x ATA133 4 x S-ATA300RAID 0 RAID 1 RAID 01 On board Atheros PCIe Gigabit LAN controller 4 x USB (Universal Serial Bus) 2.0 Vista Ready