https://blog.wongcw.com/2021/04/08/%e5%82%b32021%e6%ac%beipad-pro%e5%92%8cmagic-keyboard%e5%8f%af%e8%83%bd%e6%9c%83%e5%9c%a8%e4%b8%8b%e9%80%b1%e4%ba%8c%e6%8e%a8%e5%87%ba/