Working Inside Your Computer 5-32. Check to see that no tools or extra parts (includ-ing screws) are left inside the computer’s chassis.3. Replace the cover.From the front of the computer, hold the cover atabout a 45-degree angle as shown in Figure 5-3. Fitthe three cover hooks into the rectangular slots onthe chassis. (It may be helpful to look down into thechassis to verify that the hooks are in place.)Pivot the cover down toward the back and into posi-tion. Make sure the securing buttons click into place.NOTE: The computer should be placed fully on a flatsurface. It is difficult to align the cover if the front ofthe computer is hanging over the edge of a table.Figure 5-3. Replacing the Computer Cover4. If you are using the optional floor stand, reattachthe floor stand.See “Using the Optional Floor Stand” in Chapter 1for instructions.5. If you are using a padlock to secure your system,reinstall the padlock.Removing and Replacing theExpansion-Card CageYour Dell computer has a removable expansion-cardcage, which greatly simplifies many installation pro-cedures by allowing you to remove the riser board and allinstalled expansion cards in a single step.Removing the Expansion-Card CageUse the following procedure to remove the expansion-card cage:1. Remove the computer cover as instructed in“Removing the Computer Cover” found earlierin this chapter.2. Check any cables connected to expansion cardsthrough the back-panel openings. Disconnect anycables that will not reach to where the cage mustbe placed upon removal from the chassis.3. Locate the card-cage securing lever (see Fig-ure 5-4). Rotate the lever upward until it stops inan upright position.Figure 5-4. Removing the Expansion-Card Cage4. Lift the expansion-card cage up and away fromthe chassis.ledgehooks in slotssecuringlevercard cage slotstabs
