Dell OptiPlex GX240 User Manual

Page 13

Setup and Quick Reference Guide

Turn off your computer and any peripherals.

Ground yourself by touching an unpainted metal surface on the

chassis, such as the metal around the card-slot openings at the back of

the computer, before touching anything inside your computer.

While you work, periodically touch an unpainted metal surface on the

computer chassis to dissipate any static electricity that might harm

internal components.

Disconnect your computer and peripherals from their power sources.

Also, disconnect any telephone or telecommunication lines from the

computer.

Doing so reduces the potential for personal injury or shock.

In addition, take note of these safety guidelines when appropriate:

• To avoid shorting out your computer when disconnecting a network

cable, first unplug the cable from the network interface controller

(NIC) on the back of your computer, and then from the network jack

on the wall. When reconnecting a network cable to your computer,

first plug the cable into the network jack, and then into the NIC.

• When you disconnect a cable, pull on its connector or on its strain-

relief loop, not on the cable itself. Some cables have a connector with

locking tabs; if you are disconnecting this type of cable, press in on the

locking tabs before disconnecting the cable. As you pull connectors

apart, keep them evenly aligned to avoid bending any connector pins.

Also, before you connect a cable, make sure both connectors are

correctly oriented and aligned.

• Handle components and cards with care. Do not touch the

components or contacts on a card. Hold a card by its edges or by its

metal mounting bracket. Hold a component such as a microprocessor

chip by its edges, not by its pins.