Dell Precision 3640 Tower - IO panel

7. Install the:
a. PSU hinge
b. Cover
8. Follow the procedure in After Working Inside Your Computer.
IO panel
Removing the IO panel
Steps
1. Follow the procedure in Before working inside your computer.
2. Remove the:
a. Cover
b. Front bezel
c. Optical drive
3. Open the PSU hinge.
4. Disconnect the IO audio cable from the connector on the system board [1] and unroute the cable from routing guides next to the
system board on the chassis [2].
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Disassembly and reassembly