Adding and Replacing PartsBefore You BeginRecommended ToolsShutting Down Your ComputerMemoryKeyboardBluetooth™Mini PCI CardHard DriveBefore You BeginThis section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that thefollowing conditions exist:l You have performed the steps in "Shutting Down Your Computer."l You have read the safety information in your Product Information Guide.l A component can be replaced by performing the removal procedure in reverse order.Recommended ToolsThe procedures in this document may require the following tools:l Small flat-blade screwdriverl Phillips screwdriverl Small plastic scribel Flash BIOS update program floppy disk or CDShutting Down Your ComputerUse the following safety guidelines to help protect your computer from potential damage and to ensure your own personal safety.1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.2. Shut down the computer.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is notcovered by your warranty.CAUTION: 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 metalmounting bracket. Hold a component such as a microprocessor by its edges, not by its pins.NOTICE: 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 withlocking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keepthem evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented andaligned.NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.