Remove the screws holding the Hard Drive in place (Boxed in Red). Then remove the Hard Drive.

Remove the screw holding the Optical drive in place (Boxed in Pink). Then slide the optical drive out, following the Pink Arrow.

Remove the screw holding the Wireless card (Boxed in Green) and then remove the wires going into the wireless card by gently pulling them up, take care not to apply too much pressure, use a Safe Open Tool if you are afraid of damaging them. (Ignore the second green box, the lower box is the one with a screw).

Remove the Wireless Card by gently removing it from its slot.

Disconnect the cable connected to the logic board near to the Wireless Card (Boxed in Yellow) by gently pulling up.