Marty here are a few pics of the unit installed. The one pic shows two cables. These come from the back of the unit and are for a USB input, the other is for an MP3 input. The USB is a short cable and MP3 is a female jack. I had to buy longer cables to come from the back of the unit to the consul area for easier access. The pic showing the small hole below the volume control is an internal mic for hands free operation. Ralph, the guy who did my upgrade, installed this at no cost. Not sure if other authorized installers do the same. The upgrade does come with wired mic that plugs into a jack at the rear, then you can run the wire wherever you want. I believe it has 6 or 10 ft length.