Chapter 4: Upgrading Your Computer

Preventing static electricity discharge

Warning

To avoid exposure to dangerous electrical voltages and moving parts, turn off your computer and unplug the power cord and modem and network cables before opening the case.

To prevent risk of electric shock, do not insert any object into the vent holes of the power supply.

The components inside your computer are extremely sensitive to static electricity, also known as electrostatic discharge (ESD).

Before opening the computer case, follow these guidelines:

•Wear a grounding wrist strap (available at most electronics stores) and attach it to a bare metal part of your computer.

•Turn off your computer.

•Touch a bare metal surface on the back of the computer.

•Unplug the power cord and the modem and network cables.

Caution

ESD can permanently damage electrostatic discharge-sensitive components in your computer. Prevent ESD damage by following ESD guidelines every time you open the computer case.

Before working with computer components, follow these guidelines:

•Avoid static-causing surfaces such as carpeted floors, plastic, and packing foam.

•Remove components from their antistatic bags only when you are ready to use them. Do not lay components on the outside of antistatic bags because only the inside of the bags provide electrostatic protection.

•Always hold expansion cards by their edges or their metal mounting brackets. Avoid touching the edge connectors and components on the cards. Never slide expansion cards or components over any surface.

Opening the case

Your computer case provides easy access to internal components.

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