Dell Inspiron 16 Plus 7630 Owner's Manual page 52

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 (M2x5) that secure the right fan to the palm-rest and keyboard assembly.
3. Connect the right-fan cable to the system board.
4. Adhere the Mylar over the right-fan cable.
Next steps
1. Install the base cover.
2. Follow the procedure in After working inside your computer.
52 Removing and installing Customer Replaceable Units (CRUs)