Dell Inspiron 7405 2n1 Service Manual page 46

Steps
1. Remove the three screws (M2.5x5) that secure the right-display hinge to the palm-rest and keyboard assembly..
2. Open the hinge at an angle of 90 degrees.
3. Peel the tape that secures the USB Type-C port bracket to the system board.
4. Disconnect the fan cable from the system board.
46 Removing and installing components