Dell Latitude 9430 2-in-1 Service Manual page 64

Steps
1. Gently disconnect the power button with fingerprint reader FPC cable from the connector on the USH daughter board.
2. Peel off the USH daughter board FPC cable from the keyboard.
3. Remove the two (M1.2x2.5) screws securing the USH daughter board to the palm-rest assembly.
NOTE: Do Not remove the screw which is used to secure the keyboard bracket in place.
4. Lift the USH daughter board with the FPC cable off the system.
5. Disconnect the USH daughter board FPC cable from USH daughter board.
64 Removing and installing components