User`s guide

2. The Mainboard

The mainboard is the large circuit board located at the bottom

of the system unit case. It is the heart of your computer system.

This board contains the central processing unit (CPU),

secondary cache subsystem, expansion slots, ports and

connectors for other computer components, and the system main

memory or RAM.

Your mainboard includes:

♦Intel Pentium (TM) Processor running at 60Mhz, 66Mhz, or 90 Mhz

♦Small Computer System Interface (SCSI) host adapter socket

♦Optional 256K or 512K secondary system cache

♦Integrated Windows compatible Business Audio that supports

ADPCM compression

♦Integrated floppy drive controller

♦Two local bus IDE hard drive interface ports supporting up to 4 IDE

devices

♦Enhanced Parallel Port

♦Two full-function, RS232, 16550-compatible serial ports

♦High-speed system memory; expandable from 2MB to 192MB

♦Flash BIOS; relocatable to 32-bit high-speed RAM for faster

performance

♦Five 16-bit ISA expansion slots

♦Three 32-bit PCI, local bus, high-speed expansion slots

♦Clock/calendar with on-board battery backup

Mainboard Features

Chapter 2 - The Mainboard