TW-AM2-NG61S CPUsocket 940 supports AMD® Athlon 64 FX/ Athlon 64/ Athlon 64 X2 Dual-Core/Sempron,2000/1600/1200/800/400 mega-per secondChipsetNVIDIA® GeForce 6150LE & nForce 4304 x 240-pin DDR2 DIMM sockets support up to 4 GMemorySupport DDR2 800/667/533/400 DDR2 SDRAM  BIOS4Mb AMI BIOSAMI 1.2 Legal BIOSSupports "Plug and Play"ACPI 1.0 Compliance Wake Up EventsSupports JumperfreeAudio, Video and NetworkingGraphicsVGA Embedded Mirage Graphics with 6150MB share memory AudioRealtek ALC655 6-channel audio codec,Compliant with AC'97 2.3 specificationRealtek RTL8100C 10/100 MbpsLANSpeed 10/100 EthernetSupports Wake-On-LANExpansion / Connectivity Slots2 x PCI slots1 x PCI ExpressX16 Graphics slot1 x PCI Express x1 slotIDE2 24-pin ATX Power Supply connector2 x USB 2.0 header support additional 4 USB2.0 ports1 x Floppy connector-support 360K~2.88MB FDDs   Connector  CPU / SYS FAN headers1 x Speaker header1 x Floppy connector-support 360K~2.88MB FDDs4-pin ATX 12V power supply connector2 x Serial ATA connectors1 x Front panel audio header1 x IrDA for SIR header1 x CD in headerx UltraDMA 133/100/66 portsBack Panel I/O Ports  HD 8CH I/O1 x PS/2 Mouse Port1 x PS/2 Keyboard Port1 x VGA Port1 x Parallel Port (ECP/EPP Support)4 x Ready-to-Use USB 2.0 Ports1 x RJ-45 PortOther Features / MiscellaneousSupport CDDrivers, Utilities, AntiVirus Software (Trial Version)Quick Installation Guide, Support CD, I/O Shield AccessoriesFloppy/ATA 133 Cables1 x SATA Data Cable (optional)1 x SATA 1 to 1 Power Cable (optional)1 x COM Port BracketForm FactorMicro ATX Form FactorOSMicrosoft® Windows® 2000 / XP / XP 64-bit / Vista / Vista 64-bit compliant