The motherboard assembly is held in place at four points in the controller's rear cover.

Make sure to use the long and not the curved edge of the Jimmy during the following prying procedure.

Insert a Jimmy next to the right shoulder button and black plastic clamp of the motherboard assembly.

Align the long edge of the Jimmy with the corner of the black plastic clamp.

Pry up the motherboard assembly by tilting the Jimmy downwards to open the plastic clamp.