Supermicro X7DWA-N Motherboard - 5400 Mp Xeon LGA771 MAX-64GB Eatx 2PCIE Uio 2PCIX Pci 1600MHZ CPU: Dual 771pin LGA Sockets Supports Intel 64-bit Xeon Quad-Core 5400/5300 Sequence/ Dual-Core 5200/5100 Sequence Processors, upto 3.4GHz; FSB 1600/1333/1066 MHz Chipset: Intel 5400 (Seaburg) & ESB2 Memory: 8x 240pin DDR2-800/667/533 FB-DIMMs, Dual Branch Memory Bus, ECC, Max Capacity 64GB Slots: 2x PCI-Express x16 Slots; 2x 64-bit 133MHz PCI-X (3.3V) Slots; 2x 32-bit PCI (3.3V) Slots; 1x UIO Slot IDE/SATA: 1x ATA-100 Channel; 6x SATA2 Ports, Support RAID 0, 1, 5, 10 Ports: 5x USB 2.0 Ports (4 rear, 1 by header); 2x IEEE 1394 Headers; 2x PS/2 Ports; 2x Serial Ports (1 rear, 1 by header); 1x Parallel Port; 2x RJ45 LAN Ports; Audio I/O Jacks