Intel D975XBX2KR Intel Core 2 Duo Ready Socket 775 ATX Motherboard Intel 975X Express Chipset supports Intel Core 2 Duo processor, Windows Vista-ready Up to 8 GB of DDR2 system memory with 800, 667, or 533 MHz DIMMs 8-channel (7.1) audio with 5 analog audio outputs and two S/PDIF digital audio outputs Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Intel 82573E/82573L 8 USB 2.0 ports, 4 Serial ATA interfaces with RAID support, 1 parallel ATA IDE interface with UDMA 33, ATA-66/100 support