Dell OptiPlex 9020 (Mid 2013) - Manual (Page 10)

Installing the Front Bezel
1. Insert the hooks along the bottom edge of the front bezel into the slots on the chassis front.
2. Push the bezel toward the computer to engage the front bezel retention clips until they click into place.
3. Install the cover.
4. Follow the procedures in After Working Inside Your Computer .
Removing The Expansion Card
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover
3. Rotate the release tab on the card-retention latch upward.
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