1-2Chapter 1: Product introduction1.1 Welcome!Thank you for buying the ASUS® P4S800D-X motherboard!The ASUSP4S800D-X motherboard, based on the SIS 655FX chipset, is the firstSIS platform supporting 800MHz FSB and dual-channel DDR 400 that delivers ahost of new features and latest technologies making it another standout in the longline of ASUS quality motherboards!Before you start installing the motherboard, and hardware devices on it, check theitems in your package with the list below.1.2 Package contentsCheck your P4S800D-X package for the following items.If any of the above items is damaged or missing, contact your retailer.1.3Special featuresLatest processor technology The motherboard supports the latest Intel®Pentium®4 Processor via a 478-pinsurface mount ZIF socket. The Pentium 4 processor with 512KB L2 cache on 0.13micron processor includes a 800/533/400 MHz system bus, Intel® Hyper-ThreadingTechnology and the FMB2 power design that allows up to 3.2+ GHz corefrequencies for up to 6.4GB/s data transfer rates. See page 1-6.Dual Channel DDR memory supportEmploying the Double Data Rate (DDR) memory technology, the P4S800D-Xmotherboard supports up to 4GB of system memory using PC3200/PC2700/PC2100/PC1600 DDR DIMMs. The ultra-fast 400MHz memory bus delivers therequired bandwidth for the latest 3D graphics, multimedia, and Internetapplications. See page 1-8.ASUS P4S800D-X motherboardATX form factor: 12 in x 9.6 in (30.5 cm x 24.5 cm)ASUS P4S800D-X series support CD2 x Serial ATA cable80-conductor UltraATA IDE cableRibbon cable for a 3.5-inch floppy driveI/O shieldBag of extra jumper capsUser Guide