HP Tc4400 HP Compaq nc4400 Notebook PC - Maintenance and Service Guide - Page 26

Product Description 1.5 Design Overview This section presents a design overview of key parts and features of the computer. Refer to Chapter 3, "Illustrated Parts Catalog," to identify replacement parts, and Chapter 5, "Removal and Replacement Procedures," for disassembly steps. The system board provides the following device connections: ■ Audio ■ Bluetooth ■ Display ■ Hard drive ■ Intel Core Duo and Celeron M processors ■ Keyboard ■ Memory module ■ Mini Card devices ■ PC Card ■ Pointing stick ■ TouchPad Ä CAUTION: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left and right sides of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and 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. Exhaust air is displaced through the ventilation grill located on the left side of the computer. 1-20 Maintenance and Service Guide