Universal pcb Board -SD/USB,FM radio,LED -power on/off,last/ ... ,repeat -DC5.0V IN -mp3 decoder board MP3/SD/USB pcb board with FM Radio(Mini audio board) Function and features ... :pcb board for MP3/SD/USB, fm radio and digital screen display, with power on/off switch, remote control ... any problems, please feel free to contact with us. MP3 pcb Board for sd usb with fm radio