Adding and Replacing Parts 103Adding and Replacing PartsBefore You BeginThis chapter provides procedures for removing and installing the components in your computer.Unless otherwise noted, each procedure assumes that the following conditions exist:• You have performed the steps in "Shutting Down Your Computer" (see page 103).• You have read the safety information (see page 11).NOTE: Unless otherwise noted, each procedure in this chapter assumes that a part can be replaced byperforming the removal procedure in the reverse order.Recommended ToolsThe procedures in this chapter may require the following tools:• Small flat-blade screwdriver• Phillips screwdriver• Small plastic scribe• Flash BIOS update program floppy disk or CDShutting Down Your ComputerUse the following safety guidelines to help protect your computer from potential damage and tohelp ensure your own personal safety.CAUTION: Before you begin this procedure, read the safety instructions at the front of this document(see page 11).CAUTION: Handle components and cards with care. Do not touch the components or contacts on acard. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a memorymodule by its side edges, not by its connector edge.NOTICE: Only a certified service technician should perform repairs on your computer. Damage due toservicing that is not authorized by Dell is not covered by your warranty.NOTICE: When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cableitself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, pressin on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenlyaligned to avoid bending any connector pins. Also, before you connect a cable, ensure that bothconnectors are correctly oriented and aligned.
