Dell Inspiron 16 5635 Owner's Manual page 50

Steps
1. Open the latch and disconnect the touchpad cable from the system board.
2. Open the latch and disconnect the keyboard cable from the system board.
3. Peel the tapes that secure the WLAN cable to the system board.
4. Remove the speaker cable from the routing guides on the palm-rest and keyboard assembly.
50 Removing and installing Field Replaceable Units (FRUs)