Mini Plug with USBAuxiliary input that allows use of either an iPod/MP3 player or a USB to play through the stereo systemCan be used to plug in MP3 players, lap-top computers, VHF radios, satellite radios and more! Has 36" cordSize: 1-11/16" diameterInstallation depth: 1-9/16"Cutout diameter: 1-5/16"