https://blog.wongcw.com/2020/10/24/%e5%be%b7%e9%8a%80%ef%bc%9aiphone-12%e6%96%b0%e5%8a%9f%e8%83%bdmagsafe%e5%b0%87%e5%88%ba%e6%bf%80%e8%98%8b%e6%9e%9c%e9%85%8d%e4%bb%b6%e6%a5%ad%e5%8b%99%e5%a2%9e%e9%95%b7/