Lenovo M91p 4480 User Manual page 78

This section provides instructions on how to replace the internal speaker.
Note: The internal speaker is only available on some models.
To replace the internal speaker, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 32.
3. Locate the internal speaker connector on the system board. See "Locating parts on the system board"
on page 12.
4. Disconnect the internal speaker cable from the system board.
5. Push the metal tab
to completely remove it from the chassis.
Figure 48. Removing the old internal speaker
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ThinkCentre User Guide
1 on the top of the internal speaker outward and slide the internal speaker upward