HP ProBook 645 G4 Maintenance And Service Manual page 77

4. Disconnect the following cables from the system board:
(1): Display cable
(2): Smart card reader cable
(3): TouchPad cable
(4): NFC module cable
(5): Fingerprint reader board cable
5. Remove the Phillips M2.0×3.0 screw (1), and then loosen captive Phillips screw (2) on the fan.
Component replacement procedures 67