TESTED/WORKING PERFECT. Motherboard socket 775 / I/O Shield/ CPU Q7400
CPU: Intel® Socket 775 Core™2 Quad/Core™2 Extreme/Core™2 Duo/Celeron® E1000 Series and 400 Series CPU Support Intel® 45nm Multi-Core CPU Intel® Hyper-Threading Technology ready Support Enhanced Intel SpeedStep Technology (EIST) Chipset: Intel® G31 /ICH7 Front Side Bus: 1600(O.C)/1333/1066/800 MHz Memory: 4 x240-pin DIMM, Max. 4 GB, DDR2 1066(O.C.)/800/667 Memory Dual Channel memory architecture Expansion Slots: 1 x PCIe x16 3 x PCIe x1 3 x PCI Storage: Intel ICH7 controller 1 xUltraDMA 100/66 4 xSATA 3 Gb/s ports LAN: RTL8111C-VCP-GR Gb LAN Audio ALC887 High Definition Audio 8 -Channel CODEC Audio Jack-detect/Multi-Streaming Technology Support optical S/PDIF output USB: 8 USB 2.0 ports ASUS Unique Features: ASUS CrashFreeBIOS3 ASUS EPU ASUS Express Gate ASUS EZ Flash2 ASUS Q-Fan ASUS MyLogo2 Overclocking Features: SFS (Stepless Frequency Selection) - FSB tuning from 133MHz to 600MHz at 1MHz increment Overclocking Protection - ASUS C.P.R.(CPU Parameter Recall) Back Panel I/O Ports: 1 x Parallel 1 x PS/2 Keyboard 1 x PS/2 Mouse 1 x S/PDIF Out (Optical) 1 x LAN(RJ45) port 4 x USB 2.0/1.1 1 x COM port 8 -Channel Audio I/O Internal I/O Connectors: 2 x USB connectors support additional 4 USB 2.0 ports 1 x IDE connector 1 x S/PDIF Out connector 1 x Azalia High definition Analog Front panel Audio connector 1 x Chassis Intrusion connector 1 x System Panel connector 1 x CPU/ 1 x Chassis/1 x Power FAN connectors 1 x CD audio in connector 1 x 24-pin EPS12V Power connector 1 x 4-pin ATX 12V Power connector BIOS: 8 Mb Flash ROM AMI BIOS, Special H/W write protection, PnP, DMI v2.0, WfM2.0, SMBIOS v2.5, ACPI v2.0a Manageability: WOL by PME,WOR by PME,WOR by Ring O/S Compatibility Windows Vista Windows XP LINUX : RedHat, SuSe, Fedora Accessories: User's manual 1 x I/O Shield 1 x UltraDMA 133/100/66 cable 1 x SATA cable Support: Disc Drivers ASUS PC Probe II ASUS LiveUpdate Utility Form Factor: ATX Form Factor 12 inch x 8.2 inch ( 30.5 cm x 20.8 cm )