Dell OptiPlex 5480 All-in-One Service Manual page 64

15. Speaker cable connector
17. Power-button cable connector
19. M.2 WLAN connector
21. Touch-screen cable connector
The following image indicates the location of system board and provides a visual representation of the removal procedure.
64 Removing and installing components
16. Coin-cell battery
18. Display cable connector
20. PSU-fan cable connector