It did originally show up Under Drives and Devices and I right-clicked on the device and select "Remove & Ignore Device", which I did awhile back. Whenever the Nano is connected, I receive the pop-ups over and over again (that's why REPEATED is in all caps in the OP). If it was just once, it would still be annoying and undesired behavior, but I probably could live with it, but it's showing the pop-up over and over and over again. The Nano is not being interacted with, iTunes is not running, so no obvious reason for the re-detections.