CPU AMD AM3/AM2+/AM2 ;PhenomII /AthlonII /Phenom / Athlon /Sempron Processors AMD Cool 'n' Quiet Technology CPU Power up to 125W Chipset AMD 770/SB700 System Bus Up to 5200 MT/s ; HyperTransport 3.0 interface for AM2+(Up to AM3) CPU Memory 4 x DIMM, Max. 16 GB, DDR2 1200(O.C.)/1066/800/667/533 ECC,Un-buffered Memory Dual Channel memory architecture Expansion Slots 1 x PCIe 2.0 x16 2 x PCIe x1 3 x PCI Storage Chipset 1 xUltraDMA 133/100 5 xSATA 3 Gb/s ports Support RAID 0,1,0+1,JBOD 1 x ESATA LAN Realtek8112 PCIE, Gigabit LAN Audio ALC887 8 -Channel USB 12 USB 2.0 ports (6 ports on mid-board,6 ports on back panel) ASUS Unique Features ASUS Quiet Thermal Solution - ASUS Q-Fan ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2 ASUS AI NET 2 Turbo Key ASUS MyLogo 2 EPU 4-Engine AI NAP ASUS Express Gate Back Panel I/O Ports 1 x PS/2 Keyboard 1 x External SATA 1 x S/PDIF Out 1 x LAN(RJ45) port 6 x USB 2.0/1.1 1 x COM port 8 -Channel Audio I/O 1 x Parallel Port Internal I/O Connectors 1 x High Definition front panel audio connector 1 x IDE connector 1 x CD audio-in connector 1 x 4 pin CPU fan connector 1 x 3 pin Chassis fan connector 1 x 3 pin Power fan connector 1 x 20 pin White Panel connector 5 x SATA connectors 3 x USB 2.0 connectors for 6 additional USB 2.0 ports 1 x 4 pin, ATX + 12V, power connector 1 x 24pin, EPS 12V power connector 1 x 4pin,S/PDIF output connector BIOS 8 Mb Flash ROM AMI BIOS Pnp, DMI v2.0, Wfm2.0, ACPI v2.0a, SMBIOS V2.5 Accessories User's manual 1 x UltraDMA 133/100/66 cable 1 x SATA cable I/O Shield Support Disc Drivers ASUS PC Probe II Anti-virus software (OEM version) ASUS Update Form Factor ATX Form Factor 12 inch x 8.2 inch ( 30.6 cm x 20.9 cm ) Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.