Convenient Car Audio Integration: The cable can only be used in the car, plug the AUX connector into the AUX audio jack in the car, the USB port can only be connected to the USB flash disk, play music, can not be connected to other devices to use. This USB to Aux Audio Adapter is a solution for connecting devices that support USB output to your car’s audio system via the 3.5mm auxiliary port, this adapter ensures a hassle free connection and enhanced audio experience while driving Designed Specifically for Car Audio Systems: This USB to AUX audio adapter is only compatible with car audio players that have decoding capabilities. If you are unsure how to decode, you can consult your player's supplier. The adapter features a male 3.5mm jack that plugs directly into your car’s aux port, with a female USB port that accommodates compatible audio sources Limitations on Device Compatibility: It’s important to note that this adapter is specifically designed for use with car aux audio systems and will not work with mobile phones, laptops, USB flash drives, or headphones. This product is not a universal USB to Aux converter. Before using, ensure that your car’s audio system supports a 3.5mm aux port, as the device will only work with vehicles equipped with this feature Plug and Play: Setting up this USB to Aux Adapter is incredibly simple, thanks to its plug and play functionality. Just insert the 3.5mm male jack into your car’s aux input, and use a USB cable to connect to your chosen device Ensure Compatibility: Make sure your car is equipped with a functioning 3.5mm aux port, as this adapter relies on that specific input for connection. If your car does not have this port, the adapter may not work as intended. Also, remember that this product is not designed for use with headphones, mobile phones, laptops, or other non car audio devices