Dell Vostro 360 (Late 2011) - Manual (Page 40)

8. Remove the speakers from the computer.
Installing The Speakers
1. Place the speakers on the chassis.
2. Tighten the screws to secure both the speakers in place.
3. Connect the speaker cable to the system board.
4. Install the system board shield .
5. Install the rear I/O cover .
6. Install the rear stand .
7. Install the rear cover .
8. Follow the procedures in After Working Inside Your Computer .
40