This is Replacement of Sony WalkMan USB Data Cable lead it charge you Walman via connection to powerd USB port. It also help to transfer data to your WalkMan at very high data transfer rate, Upto 480 MB/sec. Its foil and braid Sheiliding reduce its EMI/RFI interference. Its twisted pair design reduces cross talk for high-speed, erroe free data transfer. You don't have need to remove MP3 Player from Protective case in order to plug into the charging port.It is also Plug and Play Compatible.