Dell OptiPlex 9010 (Mid 2012) - Manual (Page 9)

Removing the Front Bezel
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover.
3. Pry the front bezel retention clips away from the chassis.
4. Rotate the bezel away from the computer to release the hooks on the opposite edge of the bezel from the chassis.
Then, lift the chassis and remove the front bezel from the computer.
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 .
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