Dell Latitude 5590 Owner's Manual page 38

b battery
c WLAN card
d WWAN
e SSD card or hard drive
f chassis frame
3 To release the SmartCard reader:
a Disconnect the SmartCard reader board cable from the connector on the system board [1].
b Peel off the cable to release from the adhesive [2].
4 To remove the SmartCard reader:
a Remove the M2.0x3.0 screws (2) that secure the SmartCard reader board to the palmrest [1].
b Pull the SmartCard reader board to release on the system board [2].
38 Removing and installing components