https://blog.wongcw.com/2021/07/20/%e8%98%8b%e6%9e%9cmagsafe%e9%9b%bb%e6%b1%a0%e7%b5%84%e7%9a%84%e4%b8%8a%e6%89%8b%e7%85%a7%e7%89%87%e9%a6%96%e6%ac%a1%e7%8f%be%e8%ba%ab%ef%bc%9a%e5%8e%9a%e5%ba%a6%e4%b8%8d%e5%b0%8f%e4%bd%86%e9%80%a0/