new hackers put music on a USB flash drive. You can play the music by connecting the USB flash drive to the USB interface. First, put the songs on the USB flash drive, but the format should not be too much. The music format recognized by the driving computer is generally MP3 format. The related introduction is as follows: 1. Power: When driving, it may happen that the battery has been charged with USB, but the power will drop instead of rising. This may be because some car owners are used to charging at first, but they are still navigating the USB interface just for data transmission. Although it seems that they are charging, the current is actually very small, which means that listening to songs or navigating consumes more electricity than charging. 2. Car charger: Although the car charger is a small object, you should pay attention to the voltage and current of the matching equipment when purchasing. For example, the standard input voltage of general portable and handheld terminal products is 5V\u2F7MA and iphone is 5V\u2F1A. The output voltage of different cars is different, for example, the output voltage of cars is 12V and that of trucks is 24 V.. Therefore, the universal on-board charger is suitable for 12V cars and the on-board inverter is suitable for trucks.