... -108MHz Function FM radio, memory function Control Provided digital display, button, remote control Shape oblongAccessoriesRemote control 1 Sound cable Option Power ... together, it has such switching order as USB→SD→AUX→FM→USB; When only with USB flash drive, it has the switching order ... standby mode when you press this button. SD card decoder board: SW-005 TF card,USB,AUX Decoder Board with FM radio ...