What does 2nd Gen mean on this device? Used and returned? Updated version?

Hi Sam. Thank you for taking the time to reach out to us with your question. The Indoor Cam (2nd Gen.) is the second generation and updated version of the device. Indoor Cam (2nd Gen) features an enhanced mounting design, a power cable/adapter, and an included removable privacy cover. A tone will sound when the cover is secured and active. We have included a link here to the product page on our website for the Ring Indoor cam (2nd Gen.): https://ring.com/support/articles/et42e/Indoor-Cam-Information. Ring Community was launched to help deliver the most current news and educational information to our neighbors. This online forum is divided into four categories: Product Boards, Ring Updates, Tips + Tricks, and a Moderators’ Corner. The Product Boards are where you can begin new topics with your questions or feedback; there is also a search option which helps you find topics that were already posted by other neighbors. We invite you to visit our site at https://community.ring.com/ today! Thank you, Melissa from Ring.