Product Description 1-15
1.3 Design Overview
This section presents a design overview of key parts and features of the computer. Refer
to Chapter 3 for the illustrated parts catalog and Chapter 5 for removal and replacement
procedures.
System Board
The system board provides the following device connections:
■ Memory expansion board
■ Hard drive
■ Display
■ Keyboard/Touchpad pointing device
■ Audio
■ Pentium II/Celeron processor
■ Fan
■ PC Cards
■ Modem
The computer is equipped with an Intel Pentium III 500-MHz, Intel Pentium II
333-MHz, or Celeron 450- or 333-MHz processor. For ventilation, an electrical fan is
installed. The fan is controlled by a temperature sensor. The fan is designed to turn on
automatically when high temperature conditions exist. These conditions are affected by
high external temperatures, system power consumption, power management/battery
conservation configurations, battery fast charging, and software applications. Exhaust
air is displaced through the ventilation grill located on the right side of the computer.
CAUTION: To properly ventilate the computer, allow at least a 3-inch (7.6 cm) clearance
on the left and right sides of the computer.
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