Dell Latitude 5280 - Installing Smart Card Reader Board; LED Board; Removing LED Board

Installing smart card reader board
1 Insert the smart card reader board to align with the tabs on the chassis..
2 Tighten the screws to secure the smart card reader board to the computer.
3 Affix the smart card reader board cable and connect the cable to the connector.
4 Install the:
a chassis frame
b SSD card
c WLAN card
d battery
e base cover
5 Follow the procedure in After working inside your computer.
LED board
Removing LED board
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
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Removing and installing components