Dell Inspiron 14 Plus 7430 Owner's Manual page 50

Steps
1. Place the fan and align the screw holes of the right fan with the screw holes on the palm-rest and keyboard assembly.
2. Replace the two screws (M2x3) that secure the right fan to the palm-rest and keyboard assembly.
3. Connect the right-fan cable to its connector on the system board.
Next steps
1. Install the base cover.
2. Follow the procedure in After working inside your computer.
50 Removing and installing Customer Replaceable Units (CRUs)