Fivetech US Cable 3.5mm Male AUX Audio Plug Jack to USB 2.0 Female Converter Cable Cord SB to 3.5mm audio jack cable Stereo Extended/Music Tone Pure and Clean 3.5mm male: plug in the car AUX port Use for vehicle navigation, vehicular audio The 3.5 plug of the line connect to the AUX interface of the car , the USB interface connect to the U disk, Implement auto plays songs of USB flash disk 3.5mm Male AUX Audio Plug Jack To USB 2.0 Female Converter Cable Cord Car MP3 The 3.5 plug of the line connect to the AUX interface of the car , the USB interface connect to the U disk.