Dell Precision T3600 (Mid 2012) - Manual (Page 32)

6. Remove the screws which secure the front I/O panel to the chassis.
7. Remove the front I/O panel from the chassis.
Installing the Front Input/Output (I/O) Panel
1. Replace the front I/O panel in its slot.
2. Tighten the screws securing the front I/O panel to the chassis
3. Attach the cables to the I/O panel.
4. Slide the USB 3.0 module in its slot.
5. Tighten the screws securing the USB 3.0 module to the front I/O panel.
6. Install:
a. front bezel
b. cover
7. Follow the procedures in After Working Inside Your Computer .
Removing the Speaker
1. Follow the procedures in Before Working On Your Computer .
2. Remove the cover.
3. Disconnect the speaker cable from the system board.
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