There is one group of wires located towards the front of the case and attached directly to the motherboard and the case. Using two fingers in a pinching motion, release the wire from the clip and disconnect it.
There is one wire plugged into the Wi-Fi module that has to be removed in order to allow the range of motion to remove the module. Simply pinch the white plastic end of the wire and pull it out.
Pull on the module from the sides and be sure not to pull on the stand that is screwed into the frame. The Wi-Fi module can then be pulled out of the clips and off the stand.