A:AnswerI was able to trade in my 2014 macbook air in July of 2020 for the latest model! I only got about $120 and it was on a best buy gift card so I ended up using it towards my newer laptop and I think they would be able to recycle your old one if they can’t use it for parts or resale.
A:Answer1. Yes.
2. Depends on how old the version is
3. There are only 2 USB-C ports and a headphone jack, but if you have an adapter for the mouse, it will most likely work. The Air will also work with most wireless mice