Specifications: CPU: LGA775 Socket for Intel® Core™ 2 Duo/ Pentium® D/ Pentium® 4/ Celeron® D Processors with 1066 MHz FSB, Supports Intel® Hyper-Threading Technology. Chipset: Intel® 945P/ ICH7 Chipset. Memory: 4 x 240-pin DIMM sockets support DDR2 667 memory up to 4GB, Supports Dual Channel DDR2 667 Un-buffered Non-ECC memory. LAN: On board 10/100/1000M LAN (Realtek RTL8110SC). Audio: On board HD 7.1 CH Audio CODEC (Realtek ALC883). Expansion Slots: 1 x PCI-E X16, 1 x PCI-E X16 (PCI-E X4 bandwith), 1 x PCI-E X1, 3 x PCI. Internal I/O: 1 x Floppy Port supports up to 2.88 MB, 1 x Ultra DMA 100/ 66/ 33 IDE connector, 4 x SATA 3Gb/s connector, 2 x USB header (support 4 ports), 1 x FP-Audio, 1 x CD-In. Back Panel I/O: 1 x PS/2 Keyboard, 1 x PS/2 Mouse, 1 x Serial Port, 1 x Printer port, 4 x USB 2.0, 1 x RJ-45 LAN connector, 7.1 CH Audio connector ( Line-in/ Surround, Line-out, MIC-in, Rear Surround, Center/ Woofer), S/PDIF Out. Serial ATA: 4 x SATA 3Gb/s offer by Intel® ICH7. Form Factor: ATX form factor 305 x 244mm, PCB Color: Blue. RoHS: 100% lead-free process and RoHS compliant. Abit IL9 Pro