USB-A 2.0 Male to 3.5mm 4 Pole Male. This cable is not audio cable, can't transmit sound. It only works with devices with 3.5mm charging port NOT AUX PORT. Universal Compatibility: Support for charging portable electronic devices through 3.5mm ports, such as: MP3 players, pocket recorders/speakers, Bluetooth headsets, iPod shuffles, etc.
