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ATX 12V connector. This power connector connects the 4-pin 12V plug from the ATX 12V power supply.

CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket for the Intel® Pentium® 4 Processor, with 533/400MHz system bus that allows 4.2GB/s and 3.2GB/s data transfer rates, respectively.

North bridge controller. This SiS648 controller integrates a high performance host interface for the Intel Pentium 4 processor, a memory controller, and SiS MuTIOL technology.

ATX power connector. This 20-pin connector connects to an ATX +12V power supply. The power supply must have at least 1A on the +5V standby lead (+5VSB).

DDR DIMM sockets. These three 184-pin DIMM sockets support up to 3GB system memory using unbuffered non-ECC PC2700/PC2100/PC1600 DDR DIMMs.

IDE connectors. These dual-channel bus master IDE connectors support Ultra DMA133/100/66, PIO Modes 3 & 4 IDE devices. Both the primary (blue) and secondary (black) connectors are slotted to prevent incorrect insertion of the IDE ribbon cable.

Floppy disk connector. This connector accommodates the provided ribbon cable for the floppy disk drive. One side of the connector is slotted to prevent incorrect insertion of the floppy disk cable.

Standby power LED. This LED lights up if there is a standby power on the motherboard. This LED acts as a reminder to turn off the system power before plugging or unplugging devices.

ASUS ASIC. This chip performs multiple system functions that include hardware and system voltage monitoring.

South bridge controller. Referred to as the SiS963 MuTIOL Media I/O, this controller integrates the audio controller with AC’97 Interface, Ethernet MAC, Dual Universal Serial Bus Host controllers, IDE Master/Slave controllers, and the MuTIOL Connect to PCI Bridge.

Audio CODEC. The ADI AD1980 is an AC’97 CODEC that allows 6-channel audio playback. The audio CODEC provides six DAC channels for 5.1 surround sound, S/PDIF interface, AUX and Line In stereo inputs, integrated headphone amplifier, greater than 90dB dynamic range, and Mic PREAMP support.

PCI slots. These six 32-bit PCI 2.2 expansion slots support bus master PCI cards like SCSI or LAN cards with 133MB/s maximum throughput.

Super I/O controller. This Low Pin Count (LPC) interface provides the commonly used Super I/O functionality. The chipset supports a high- performance floppy disk controller for a 360K/720K/1.44M/2.88M floppy disk drive, a multi-mode parallel port, two standard compatible UARTs, and a Flash ROM interface.

Flash ROM. This 2Mb firmware contains the programmable BIOS program.

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Chapter 1: Product introduction