Installing The System Board - Dell Inspiron 15 3521 Service Manual

2. Remove the screw (M2x2) and the three screws (M2x3.5) that secure the system board to the palm-rest and keyboard
assembly.
NOTE: When removing the system board with the system board thermal plate, remove the two screws (M2x5) that
secure the system board thermal plate to the palm-rest and keyboard assembly.
3. Carefully lift and remove the system board away from the palm-rest and keyboard assembly.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the connectors on your system board.
66 Removing and installing components