Dell Latitude 5280 Owner's Manual page 26

b battery
c WLAN card
d SSD card
3 To release the chassis frame:
a Release the WLAN cables from the routing channels [1].
b Disconnect the speaker cable from the connector on the system board [2].
c Lift the latch and disconnect the keyboard cable from the connector [3].
4 To remove the chassis frame:
a Remove the M2*2, M2*3, and M2*5 screws that secure the chassis frame to the computer [1].
b Lift the chassis frame away from the computer [2].
26 Removing and installing components