Dell Latitude 5590 Owner's Manual page 36

4 To remove the touchpad panel:
a Lift the latch and disconnect the touchpad panel cable from the connector on the system board [1].
b Remove the M2.0x3.0 screws (2) that secure the touchpad panel to the laptop [2].
c Lift the touchpad panel away from the laptop [3].
36 Removing and installing components