Outside the support the signal cuts directly. Supports the USB/SD automatic cut over. (After USB/SD, inserts first broadcast) The module contains the MP3 song decoding chip. Supports the USB, SD, MMC card to carry on the broadcast. Supports the USB/SD card cut, on a tune, the next tune, the broadcast/suspension. Supports FAT16, the FAT32 filing system Supports MP1 Layer3, MP2 Layer3, MP3 the Layer3 edition song Supports 32-320kbps the MP3 song Support power failure memory function: Remembered before the power failure, broadcasts song and volume Operating instructions In the USB/SD condition, according to The key suspends, presses a key once more broadcast In the USB/SD condition, in pressed key broadcast a tune, pressed key broadcast next tune