https://blog.wongcw.com/2020/11/22/%e8%98%8b%e6%9e%9c%e9%96%8b%e5%94%ae%e9%81%a9%e7%94%a8%e6%96%bciphone-12%e7%b3%bb%e5%88%97%e6%a9%9f%e5%9e%8b%e7%9a%84magsafe%e7%9a%ae%e9%9d%a9%e4%bf%9d%e8%ad%b7%e5%a5%97/