A wireless keyboard module, portable electronic device and methods for charging and pairing a wireless keyboard module to a portable electronic device are provided herein. According to one embodiment, the wireless keyboard module includes a wired connector configured to electrically connect to a wired connector on a back surface of the portable electronic device when the wireless keyboard module is mounted onto the back surface of the portable electronic device. Upon connecting the wired connectors of the wireless keyboard module and the portable electronic device, the wireless keyboard module is configured to receive a charging signal from the portable electronic device and configured to transmit a pairing code to the portable electronic device across the wired connectors.