Specifications:  Asus p4s8x-mx  CPU support  Socket 478 for intel pentium 4 processor  Support hyper-threading technology  Fsb 800/533 MHz  Support prescott and northwood cpus  Support celeron and celeron d cpus  Chipset  North bridge: SIS 661gx South bridge: SIS 964 Support high density memory Memory  2 x 184-pin DDR dimm socket support up to 2 GB Support ddr400/333 MHz 2.5v DDR SDRAM Expansion slot  1 x agp 8x slot 3 x PCI 2.2 slots Graphics  SIS real 256e graphics Onboard video: Up to 128 MB Storage/raid  Support by SIS 964 4 x ultra dma 133/100/66/33 devices 2 x serial ata devices Raid0, raid1 & jbod configuration Audio  Realtek alc655 6-channel audio codec Compliant with ac'97 2.3 specification Spdif out interface LAN  Integrated 10/100 mbps LAN controller Realtek phy Rear panel I/o  1 x PS/2 keyboard & PS/2 mouse connectors 4 x USB ports 1 x rj45 LAN connector 1 x vga port 1 x parallel port (lpt1) 1 x serial port (com1) 1 x audio port (line-in, line-out, mic-in) Internal I/o connectors and headers  1 x 20-pin atx power supply connector & 4-pin 12v connector 1 x FDD connector supports two 360k~2.88mb fdds 2 x IDE connectors 2 x serial ata connectors 2 x USB 2.0 header support additional 4 USB ports 1 x speaker header 1 x spdif out header 1 x front panel switch/LED header 1 x front panel audio header 1 x game/midi connector CD in/aux in headers Cpufan/casfan connectors Special features  Support S/pdif out interface Asus crash-free bios2 Form factor  Micro-atx size,9.6" x 9.6" (245mm x 245mm)