the method is as follows: first, find the interface of the car music usb flash drive in the cab of the car. Usually, the usb interface of the car is in the glove box or under the center console. After finding the interface, plug the USB flash drive with music into the USB interface of the car, then turn on the power switch of the central control panel of the car, operate according to the contents displayed on the screen, and press the operation button to switch to the USB flash drive to read the file. Note that some video and music file formats are not supported. Usually, mp3 and wma formats can be recognized by almost all car systems. If there is no usb device, you can't play the video or songs in the U disk. Because the use of car USB flash drive is mainly for storing music, its file space is not large, so you only need to choose the appropriate car USB flash drive to use it in the car.