Dell Precision 400 Service Manual (.pdf) - Page 69
Expansion Cards, Expansion-Card Cage
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Expansion Cards The computer has a removable expansion-card cage. The expansion-card cage contains the riser board and any installed expansion cards. Dell recommends that you remove the expansion-card cage first before removing or installing expansion cards. If you are not removing any expansion cards, leave the external cables attached to the expansion cards. Expansion-Card Cage securing lever card cage Figure 4-17. Expansion-Card Cage Removal To remove the expansion-card cage, follow these steps: 1. Rotate the securing lever toward the back of the computer until it is fully extended. 2. Lift the expansion-card cage up and away from the computer. To replace the expansion-card cage, keep the cage flush against the chassis to ensure that the lever engages the notch when the lever is depressed. Removing and Replacing Parts in the Midsize Chassis 4-17
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