w w w . d e l l . c o m | s u p p o r t . d e l l . c o m 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.NOTICE: To avoid damaging the computer, perform the following steps before you begin working insidethe computer.1 Ensure that the work surface is flat and clean to prevent the computer cover from beingscratched.2 Turn off your computer (see page 1).NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug itfrom the network wall jack.3 Disconnect any telephone or telecommunication lines from the computer.4 Disconnect your computer and all attached devices from their electrical outlets, and thenpress the power button to ground the system board.NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it intothe computer.5 Remove any installed PC Cards from the PC Card slot.6 Close the display and turn the computer upside down on a flat work surface.NOTICE: To avoid damaging the system board, you must remove the main battery before you service thecomputer.7 Slide and hold the battery-bay latch release on the bottom of the computer, and then removethe battery from the bay.Hard DriveCAUTION: If you remove the hard drive from the computer when the drive is hot, do not touch the metalhousing of the hard drive.CAUTION: Before working inside your computer, follow the safety instructions located in the ProductInformation Guide.NOTICE: To prevent data loss, turn off your computer before removing the hard drive (see page 1). Donot remove the hard drive while the computer is on, in standby mode, or in hibernate mode.NOTICE: Hard drives are extremely fragile; even a slight bump can damage the drive.NOTE: Dell does not guarantee compatibility or provide support for hard drives from sources otherthan Dell.