CPU Intel Socket 775 for Intel Core2 Extreme/Core2 Quad/ Core2 Duo/Pentium dual-core/Celeron dual-core /Celeron Processors Support Intel next generation 45nm Multi-Core CPU Compatible with Intel 06/05B/05A processors Chipset Intel X48 / ICH9R Intel Fast Memory Access Technology Front Side Bus 1600/1333/1066/800 MHz Memory 4 x DIMM, Max. 8 GB, DDR3 2000(O.C.)/1800(O.C.)/1600/1333/1066/800 ECC,Non-ECC,Un-buffered Memory Dual Channel memory architecture - Supports Intel Extreme Memory Profile (XMP) - For the X.M.P. support, CPUs with FSB 1333 or above are recommended. - When installing total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended. Expansion Slots 2 x PCIe 2.0 x16 , support at full x16, x16 speed 3 x PCIe x1 ( the PCIEx1_1 (black) is compatible with audio slot) 2 x PCI 2.2 CrossFire Support ATI CrossFireX Technology graphics cards Storage Southbridge 6 xSATA 3 Gb/s ports Intel Matrix Storage Technology Support RAID 0,1,5,10 LAN Dual Gigabit LAN controllers, both featuring AI NET2 Support Teaming Technology Audio SupremeFX X-Fi Audio Card - ADI AD2000B 8-channel High Definition Audio CODEC - EAX Advanced HD 4.0 - X-Fi CMSS-3D - X-Fi Crystalizer - Creative ALchemy - Supports 1 x S/PDIF out header - Supports Coaxial/Optical S/PDIF out ports on rear IEEE 1394 2 x 1394a ports (1 port at back I/O, 1 port onboard) USB 12 USB 2.0 ports (6 ports at mid-board, 6 ports at back panel) Overclocking Features Fusion Block System with optional thermal kit on MOS and NB Extreme Tweaker TweakIt Extreme Engine - 16-phase CPU power design - 3-phase NB power design - 2-phase DDR3 power design - ML Caps on CPU, memory and NB respectively Speeding HDD iROG BIOS Flashback Loadline Calibration Intelligent overclocking tools: - CPU Level Up - Memory Level Up - AI Gear 3 + - ASUS AI Booster Utility - O.C Profile Overclocking Protection: - COP EX (Component Overheat Protection - EX) - Voltiminder LED - ASUS C.P.R.(CPU Parameter Recall) Special Features External LCD Poster Onboard Switches: TweakIt / Power / Reset / Cls CMOS (at rear) EL I/O Q-Fan Plus ASUS EPU-6 Engine ASUS Q-Connector ASUS Fan Xpert ASUS EZ Flash 2 ASUS CrashFree BIOS 3 ASUS MyLogo3 Back Panel I/O Ports 1 x PS/2 Keyboard port(purple) 1 x External SATA port 2 x LAN (RJ45) port 6 x USB 2.0/1.1 ports 1 x IEEE1394a port 1 x Clr CMOS switch Internal I/O Connectors 3 x USB 2.0 connectors supports additional 6 USB 2.0 ports 1 x Floppy disk drive connector 1 x IDE connector for two devices 6 x SATA connectors (Blue) 2 x Speeding HDD SATA connectors (Black) 8 x Fan connectors: 1 x CPU / 1 x PWR / 3 x Chassis / 3 x Optional 3 x thermal sensor connectors 1 x IEEE1394a connector 1 x LCD Poster connector 1 x EL I/O Shield connector 1 x Chassis Intrusion connector 24-pin ATX Power connector 8-pin ATX 12V Power connector 1 x En/Dis-able Clr CMOS slide switch System panel connector BIOS 16 Mb Flash ROM DMI 2.0 AMI BIOS PnP WfM 2.0 SM BIOS 2.4 ACPI 2.0a Multi-language BIOS Manageability WOL by PME,WOR by PME,Chasis Intrusion,PXE Accessories Fusion Block System Accessory Optional Thermal Kit for NB and MOS DIY Pedestal ASUS Optional Fan SupremeFX X-Fi Audio Card External LCD Poster 3 in 1 ASUS Q-Connector Kit UltraDMA 133/100/66 cable Floppy disk drive cable SATA cables SATA power cables 2-port USB2.0 + IEEE 1394a module EL I/O Shield Thermal sensor cables Cable Ties User's manual Support Disc Drivers and applications ASUS PC Probe II ASUS Update ASUS AI Suite Sound Blaster X-Fi Utility Futuremark 3DMark 06 Advanced Edition Kaspersky Anti-Virus Form Factor ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x24.5 cm ) It is highly recommended to always use the most recent driver version available. Do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. 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.