Dell XPS 13 L321 Series Owner's Manual page 20

2 Disconnect the left-speaker cable from the I/O board connector.
3 Release the Mini-Card cables from the routing guide on the left speaker.
4 Remove the two screws that secure the left speaker to the
palm-rest assembly.
5 Lift the left speaker off the palm-rest assembly.
1
1 screws (2)
3 left-speaker cable
20
Speakers
2 3
2 routing guide