CPU -LGA775 socket for Intel Core2 Quad / Core2 Extreme / Core2 Duo / Pentium Extreme / Pentium D / Pentium 4 Processors Chipset - Intel P35 / ICH9R with Intel Fast Memory Access Technology Memory -4 x DIMM, max. 8GB, DDR3 1333*/1066 / 800 MHz, non-ECC, un-buffered memory -Dual channel memory architecture Expansion Slots -2 x PCI-E x16 (blue @ x16 mode, black @ x4 or x1 mode) supports CrossFire Technology -2 x PCI-E x1, 3 x PCI Southbridge - 6 x SATA 3.0 Gb/s ports - Supports RAID 0 and 1 JMicron JMB363 PATA and SATA controller - 1 x UltraDMA 133/100/66 for up to 2 PATA devices - 2 x External SATA 3.0 Gb/s port (SATA On-the-Go) - Supports SATA RAID 0,1 and JBOD LAN - Dual Gigabit LAN controllers, featuring AI NET2 -Marvell88E8056 PCI-E Gigabit LAN controllers -RealtekRTL8110SC PCI Gigabit LAN controller Wireless LAN - ASUS WiFi-AP Solo -54 Mbps IEEE 802.11g and backwards compatible with 11 Mbps IEEE 802.11b Audio - ADI AD1988B 8-channel High Definition Audio CODEC - Coaxial / Optical S/PDIF out ports at back I/O - ASUS Noise Filter IEEE 1394 - Agere FW322 1394a controller supports 2 x IEEE 1394a ports Back Panel I/O Ports -1 x PS/2 Keyboard, 1 x S/PDIF Out (Coaxial + Optical), 2 x External SATA -2 x IEEE1394a, 2 x RJ45 port, 6 x USB 2.0/1.1 -1 x WiFi-AP Solo antenna jack, 8-channel Audio I/O Internal I/O Connectors -2 x USB connectors support additional 4 USB ports -1 x Floppy disk drive connector, 1 x IDE connector -1 x COM connector, 6 x SATA connectors, 1 x CPU Fan connector -4 x Chassis Fan connector, 1 x Power Fan connector, 1 x IEEE1394a connector -Front panel audio connector, 1 x S/PDIF Out Header, Chassis Intrusion connector, CD audio in -24-pin ATX Power connector, 2 x 4-pin ATX 12V Power connector, System Panel(Q-Connector) Form Factor - ATX Form Factor, 12"x 9.6" (30.5cm x 24.4cm)