Aux Adapter,Yomikoo Car MP3 USB Interface Adapter Audio Car Digital Music Cd Changer 3.5mm Input Aux Interface for VW 8Pin Bettle 1998-2009,Golf 1998-02,GTI 1999-2002,Jetta 1998-2001,Passat 1998-2000 Direct Connection via CD changer Port with CD quality sound Support USB Flash, SD Card and 3.5mm jack input. The AUX NOT support radio panel control, only control on cellphone or mp3 device. Fit For VW Bettle 1998-2008,Cabrio 1998-2002,Eurovan 1999-2003,Golf 1998-2002,GTI 1999-2002,Jetta 1998-2001,Passat 1998-2000,T5 1999-2002,Sharan 1998-2001;Skoda Fabia 2003-2008,Octavia 2003-2007,Superb 2003-2008;Seat Ahambra 1996-2004,Arosa 1997-2004,Cordoba 2003-2006,Ibiza 1999-2007,Leon 2000-2005,Toledo 1999-2005,Vario 1999-2005 Not compatible with factory Navigation,DVD and Touch Screen radio . U<span class="a-text-bold">SB Connector :</span> 3<span class="a-text-bold">.5mm AUX Connector :</span> Connect through the car CD player directly,Non-destructive installation. Control sthe music play and volume by Car radio panel. Support 3.5mm AUX audio input. High quality MP3/WMA decoder, let the music more pretty. with no Signal interference,no need to install baterry. Please make sure that the U Disk or Memory card is FAT format. Compatible with Audi and VW, Skoda, Seat 8 pin. The Audi 20-pin Adapter Cable should be used to accept the factory connector and plug into the radio. Not compatible with the Navi and DVD radio. Support USB Flash,SD Card and 3.5mm jack input. Please make sure that the U Disk or Memory card is FAT format. The folders should be name them CD1,CD2,CD3...etc