Carefully lift the cover slightly upwards

Remove the switch

It's only secured with a clip at one side and might fall off during handling, if not removed now. However, this step is - optional-

Lift sideways and remove the two PCB connectors

Best use your fingernail or a soft plastic spudger to gently flip the black plastic on the side of the connector to the right until it flips over

Then gently pull the PCB to the left outwards without damaging it or bending it too sharply

Remove back cover completely