HP ProBook 4525s - Notebook PC Maintenance And Service Manual page 76

4. Release the ZIF connectors (1) and (3) to which the TouchPad and fingerprint cables are
connected, and then disconnect the cables (2) and (4) from the system board.
NOTE:
5. Remove the palm rest.
Reverse this procedure to install the palm rest.
68 Chapter 4 Removal and replacement procedures
Only select models are equipped with fingerprint readers.