Asus P5KC Core 2 Quad/ Intel P35/ DDR3+DDR2/ CrossFire/ A&GbE/ ATX Motherboard
Specifications:

Mfr Part Number: P5KC
CPU: Socket 775 Support Intel Core 2 Quad/ Core 2 Extreme/ Core 2 Duo/ Pentium Extreme/ Pentium D/ Pentium 4 Processors; Compatible with Intel 05B/05A/06 Processors; Support Intel Next Generation 45nm Multi-Core CPU; FSB 1333/1066/800 MHz
Chipset: Intel P35 & ICH9
Memory: 2x 240pin DDR3-1333/1066/800 DIMMs + 4x 240pin DDR2-1066/800/667 DIMMs, Dual Channel, Non-ECC/Un-buffered, Max Capacity 4GB DDR3 or 8GB DDR2
Slots: 2x PCI-Express x16 Slots (Supports CrossFire Technology, Run on x16/x4 or x16/x1); 1x PCI-Express x1 Slot; 3x PCI Slots
IDE/SATA: 4x SATA2 Ports (By ICH9); 1x ATA-133 Channel, 1x SATA2 Port, 1x External SATA2 Port, Support RAID 0,1, JBOD (By Jmicron JMB363 PATA and SATA Controller)
Audio: Realtek ALC 883 8-Channel High-Definition Audio CODEC
LAN: Integrated PCIe Gigabit Ethernet Controller
Ports: 12x USB 2.0 Ports (6 rear, 6 by headers); 2x IEEE1394a Ports (1 rear, 1 by header); 1x eSATA Port; 1x PS/2 Keyboard Port; 1x Serial Header; 1x S/PDIF Out (Coaxial + Optical); 1x RJ45 LAN Port; Audio I/O Jacks
Power Connector: 1x 24pin Main Power; 1x 4pin CPU Power
Form Factor: ATX, 12 x 9.6 inch / 30.5 x 24.4 cm
Package: Retail