Asus A8N-SLI nVidia Chipset nForce4 SLI AMD Socket 939 ATX Desktop Motherboard 60-M9L0P5-A07.Asus Part Number: 60-M9L0P5-A07Model Number: A8N-SLI Rev. 1.02Specifications:CPU Socket Type: 939CPU Type: Athlon 64 X2 / Athlon 64 FX / Athlon 64FSB: 1000MHz Hyper Transport (2000 MT/s)Chipset: NVIDIA nForce4 SLINumber of Memory Slots: 4×184pinMemory Standard: DDR 400Maximum Memory Supported: 4GBChannel Supported: Dual ChannelPCI Express x16: 2PCI Express x1: 2PCI Slots: 3PATA: 2 x ATA100 4 Dev. MaxPATA RAID: NV RAID 0/1/0+1 JBODSATA 3Gb/s: 4SATA RAID: NV RAID 0/1/0+1 JBODAudio Chipset: Realtek ALC850Audio Channels: 8 ChannelsMax LAN Speed: 10/100/1000MbpsPS/2: 2LPT: 1USB 1.1/2.0: 4 x USB 2.0IEEE 1394: 1 x IEEE 1394aS/PDIF Out: 1 x Optical, 1 x CoaxialAudio Ports: 6 PortsOnboard USB: 3 x USB 2.0 connectors support 6 portsOnboard 1394: 1 x 1394a connector support 1 portForm Factor: ATXDimensions: 12.0" x 9.6"Power Pin: 24 Pin