Dell OptiPlex 790 (Early 2011) - Manual (Page 36)

8. Remove the screws that secure the Input/Output board.
9. Remove the Input/Output bracket.
Installing the Input/Output Board
1. Align the Input/Output board with the Input/Output bracket and tighten the
screws securing the Input/Output board.
2. Insert the Input/Output bracket into the slot on the chassis front.
3. Tighten the screws to secure the Input/Output bracket.
4. Connect the Input/Output board data cable to the system board.
5. Install the drive cage .
6. Install the front bezel .
7. Install the cover .
8. Follow the procedures in After Working Inside Your Computer .
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