usb sd car stereo adapter USB/SD AUX IN CD quality sound,no FM noise ... sources, like PC, MD, PSP, GPS Navigation and Mobile Phone Easy to install and use,without changing the car origional ... changer port(usually located behind the radio)Insert the USB disk or SD card(please consult user manual about ... setting music files in the USB disk or SD card) For PC, PSP, MD, Mobile Phone etc Aux device, connect it ...