TESTED/WORKING PERFECT. Motherboard socket 775 ASUS P5K-C/ I/O Shield/ CPU Q8400
CPU Intel® Socket 775 Core™2 Quad/Core™2 Extreme/Core™2 Duo/Pentium® Extreme/Pentium® D/Pentium® 4 Compatible with Intel® 05B/05A/06 Processors Support Intel® 45nm CPU Chipset Intel® P35 ICH9 Intel Fast Memory Access Technology Front Side Bus 1600/1333/1066/800 MHz Memory 2 x DIMM, Max. 4 GB, DDR3 1333(O.C.)/1066/800 Non-ECC,Un-buffered Memory Dual Channel memory architecture 4 x DIMM, max. 8GB, DDR2 1066*/800 / 667 MHz, non-ECC, un-buffered memory Dual channel memory architecture Expansion Slots 2 x PCIe x16 (blue @ x16 mode, black @ x4 or x1 mode) Supports CrossFire Technology 1 x PCIe x1 3 x PCI Storage Southbridge 4 x SATA 3 Gb/s ports JMicron® JMB363 PATA and SATA controller 1 x UltraDMA 133/100/66 for up to 2 PATA devices 1 x External SATA 3.0 Gb/s ports 1 x SATA 3.0 Gb/s port (SATA On-the-Go) Support RAID 0,1,JBOD LAN PCIe Gigabit LAN controller VIA VT6308P controller supports 2 x 1394a port(s) (one at midboard; one at back panel) Audio Realtek ALC 883 8-Channel High-Definition Audio CODEC Coaxial / Optical S/PDIF out ports at back I/O Support Jack-Sensing, Enumeration, Multi-streaming USB Ports 12 USB 2.0/1.1 ports (6 ports at mid-board, 6ports at back panel) BIOS 8 Mb Flash ROM DMI 2.0 AMI BIOS PnP WfM 2.0 SM BIOS 2.3 ACPI 2.0a Back Panel I/O Ports 1 x PS/2 Keyboard 1 x External SATA 1 x S/PDIF Out 1 x IEEE 1394a 1 x LAN(RJ45) port 6 x USB 2.0/1.1 8 -Channel Audio I/O Internal I/O Connectors 3 x USB connectors support additional 6 USB ports 1 x Floppy disk drive connector 1 x IDE connector 5 x SATA connectors 1 x IEEE 1394a connector 1 x CPU Fan connector 2 x Chassis Fan connector 1 x Power Fan connector 1 x S/PDIF Out connector 1 x 4-pin ATX 12V Power connector 24 Power connector Front panel audio connector Chassis Intrusion connector CD/AUX audio in System Panel Form Factor ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )