Konig USB Cassette Player and MP3 Converter Do you still have an extended collection of tapes? With this cassette-MP3 converter you are able to enjoy them once again. When you connect this adapter to your PC you will be able to convert your tapes to MP3 and enjoy them wherever you are. The adapter works on batteries or can be powered via USB. Power: USB/2x AA (not included). Output: Mini USB.