https://blog.wongcw.com/2021/09/07/fcc%e6%96%87%e6%aa%94%e6%8f%ad%e7%a4%ba%e6%96%b0%e6%ac%bemagsafe%e9%85%8d%e4%bb%b6-iphone-12%e8%a2%ab%e8%98%8b%e6%9e%9c%e7%a8%b1%e4%bd%9c%e8%88%8a%e8%a8%ad%e5%82%99/