User Guide

1-6

Chapter 1: Product introduction

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 called mPGA478 B. This socket accommodates the Intel

Pentium

4 478/Northwood Processor with 400MHz system bus.

North bridge controller. This SiS645 controller integrates a high

performance host interface for the Intel Pentium 4 processor, a

memory controller, an AGP interface, 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 two 184-pin DIMM sockets support up

to 2GB using unbuffered non-ECC PC2700/2100/1600 DDR

DIMMs.

IDE connectors. These dual-channel bus master IDE connectors

support up to four Ultra DMA/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.

South bridge controller. Referred to as the SiS961 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.

ASUS ASIC. This chip performs multiple system functions that

include hardware and system voltage monitoring.

Onboard LED This green indicator light informs the user that

power is being supplied to the board.

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.

Flash EEPROM. This 2Mb firmware contains the programmable

BIOS program.

PCI slots. These three 32-bit PCI 2.2 expansion slots support bus

master PCI cards like SCSI or LAN cards with 133MB/s maximum

throughput.