I replaced my car stereo and 4 speakers. The Kenwood stereo had everything on my wish list, BUT a USB port on the front of the unit. The sales rep recommended this adapter. I wasn't sure about having it installed in glove box, or "hard" mounted under the dash. Then I read one of the Best Buy reviews, and realized it fits the mounting hole were the cig lighter is. Since my Jeep has 2 cig adapter plugs, removed one, and replaced it with this USB adapter. The adapter is just a LITTLE smaller than the mounting hole, so I used Krazy Glue to keep it tight. Looks like it was Factory Installed.