Dell OptiPlex 790 (Early 2011) - Manual (Page 15)

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Front Bezel
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.
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