Dell Latitude 5420 Rugged - Installing the Rear I-O Board

5. Loosen the three 'M2.5*5' screws [1] and lift the I/O board away from the system [2].
Installing the Rear I-O board
1. Install the rear I/O board on the system board and slide the serial port through the face plate [1].
2. Secure the I/O board using three 'M2.5*5' screws [2].
Removing and installing components
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