Dell Precision 5480 Service Manual page 36

Steps
1. Align and place the left and right speakers into its slot on the palm-rest and keyboard assembly.
2. Route the left and right tweeter speakers using the routing guides on the system board.
3. Replace the two (M1.6x1.8) screws that secure the left and right speakers to the palm-rest and keyboard assembly.
4. Adhere the left and right tweeter speakers in their compartments on the system board.
5. Connect the left and right speaker cables to the connectors on the system board.
Next steps
1. Install the battery.
2. Install the base cover.
3. Follow the procedure in After working inside your computer.
36 Removing and installing components