Dell Vostro 330 (Early 2011) - Manual (Page 48)

7. Remove the speakers from the system board.
Installing The Speakers
1. Place the speakers on the system board.
2. Replace the screws that secure the speakers to the system board.
3. Connect the speaker cable to the system board.
4. Replace the
system board shield .
5. Replace the front stand .
6. Replace the cover .
7. Follow the procedures in After Working Inside Your Computer .
48