Specification Mfr Part Number: NF4 ULTRA-INFINITY CPU: Socket 939, Supports AMD Athlon 64/ 64FX/ Sempron, FSB 2000MT/s DFI INFINITY NF ULTRA-II-M2 Socket AM2/ nForce4 Ultra/ DDR2/ SATA2/ A&GbE/ ATX Motherboard Specifications Mfr Part Number: INFINITY NF ULTRA-II-M2 CPU: Socket AM2 support AMD Athlon 64 X2/ Athlon 64 FX/ Athlon 64/ Sempron; FSB 2000MT/s Chipset: nVidia nForce4 Ultra Memory: 4x 240pin DIMMs support Dual Channel DDR2 667/533 Memory; Max capacity 4GB Slots: 2x PCI Express x16 slots (Support nVidia SLI Technology); 1x PCI Express x1 slot; 3x PCI slots IDE/SATA: 2x ATA-133 channel; 4x SATA2 ports; nVidia RAID allows RAID arrays spanning across Serial ATA and Parallel ATA; Support RAID 0, 1, 0+1 and JBOD Audio: Realtek ALC850 8-channel AC'97 audio CODEC LAN: Marvell 88E1115 Gigabit LAN Ports: 10x USB 2.0 ports (4 rear, 6 by headers); 2x IEEE1394 ports (1 rear, 1 by header); 2x PS/2 ports; 1x Serial port; 1x Parallel port; 1x optical S/PDIF-out; 1x RCA S/PDIF-out; 1x RJ45 LAN port; Audio I/O jack Form Factor: ATX, 12 x 9.45 inch / 30.5 x 24 cm Package: Retail