Chapter 1. Overview

This chapter describes the system board, its features, and its major components.

Features and Components

Table 1-1. Main Features and Components

Main Features



Dual Intel SC242 (Slot 1) support


Intel Pentium III processors


Two integrated voltage regulators


133 MHz 64-bit front-side bus (FSB)

System Chipset

ServerWorks ServerSet III WS


Streaming Multiport Controllers


266 MHz 32-bit fast I/O interface


AGP controller – one AGP Pro expansion socket


USB controller – four Universal Serial Bus (USB) ports – two external, one internal, one for the AGP controller


EIDE controller – two Peripheral Component Interconnect (PCI)
bus-mastering EIDE channels

I/O Controller



Controls keyboard, mouse, real-time clock, and floppy disk


Two serial ports, one parallel port


PC133 Synchronous Dynamic Random Access Memory (SDRAM)


Six 168-pin registered dual-inline memory module (DIMM) sockets


Supports 72-bit Error Correction Code (ECC) memory modules


Four banks, two DIMMs per bank, two-way interleaved


133 MHz 128-bit memory bus

SCSI Controller

LSI 53C1010


Low-voltage differential (LVD) Ultra 3 SCSI bus


Two 16-bit 80 MHz SCSI channels


Two high-density (HD) 68-pin SCSI connectors


320 MB/sec Ultra 3 SCSI throughput


Handles both Ultra2 and Ultra3 devices at their assigned transfer rates


Network Controller

Intel 82559


100 Mbit/sec and 10 Mbit/sec Ethernet network interface


Wake-on-Modem support


Wake-on-LAN support

Audio Controller

Creative Labs ES1373 AudioPCI


Audio Codec '97 (AC97)


Advanced Technology Attachment Packet Interface (ATAPI) CD-ROM audio header, modem audio header, and video header

Expansion Sockets

One full-length AGP Pro socket


Two full-length fast/wide PCI sockets (64 bits, 66 MHz/33 MHz, 3.3 V)


Four full-length wide PCI sockets (64 bits, 33 MHz, 5 V)


One full-length Industry Standard Architecture (ISA) socket (16 bits)

Input/Output Ports

One PS/2 mouse port (6-pin mini-DIN)


One PS/2 keyboard port (6-pin mini-DIN)


One parallel (LPT) port (25-pin D-sub)


Two serial (COM) ports (9-pin D-sub)


Two USB ports (self-identifying, hot-pluggable, 12 MB/sec)


One SCSI port (68-pin HD) – Ultra 3


One Ethernet port (8-pin RJ-45)


One each microphone in, line in, and line out audio ports (PC standard 1/8-inch phone jacks)


One MIDI/game port (15-pin D-sub)


Four ATAPI connectors (internal) – CD IN, VIDEO IN, MONO IN, MPEG IN


Phoenix BIOS


Supports Advanced Configuration and Power Interface (ACPI)


Supports Desktop Management Interface (DMI)


Supports PC99


Supports S0, S1, S3, and S5 system states


Auto-configuration of IDE hard disk types

Form Factor

Extended ATX (12 in x 13 in)


Two 20-pin ATX power connectors


Stacked input/output ports

Voltage and Power

ATX power supply connectors


+12V variable power source for DC fans


3.3 V SDRAM memory support

System Management

Monitoring of all system voltages and four temperature points


Fan headers with monitoring and control functions


Chassis intrusion alert header


Temperature and voltage monitoring


Wake-on-Modem header


Wake-on-LAN header

Regulatory Compliance

FCC Class B (Declaration of Conformity)


European Community CE (Declaration of Conformity)


Underwriter's Laboratories

Block Diagram

Figure 1-1 on the following page shows the major system board components and connections.

Figure 1-1. 133MHz FSB Block Diagram

133MHz FSB Block Diagram

Figure 1-2 calls out the system board's major components. More detailed information on system board components is found in Chapter 2, “ Components”.

Figure 1-2. Major Components of the System Board

Major Components of the System Board