Black 3.5mm Male AUX Audio Plug Jack To USB Female Converter Cable Cord Car MP3 Brand new and high quality. High fidelity, anti-interference, good signal. The 3.5 plug of the line connect to the AUX interface of the car , the USB interface connect to mp3. Implement auto plays songs of USB flash disk. Fit for mp3, mp4 etc, it won't play music connecting with U-disk. Category: D3.5Audio cable. Connector: D3.5mm-USB. Color: black. Length: 24cm. Note: Not all the car with this interface can use this kind of line. Some car AUX have no decoding function, so can only use MP3 device.