To remove the wireless module, loosen the 8 screws on the base cover. Pry the cover away from the recess points near the hinges to remove it. Identify the wireless module and loosen the single screw. Unlatch the module and disconnect the cables. Lift the module out of the system.
To reinstall the wireless module, place it back in the system. Reconnect the cables and relatch it. Tighten the single screw and secure the base cover back on the system.