https://blog.wongcw.com/2019/08/25/usb-pd%ef%bc%86type-c-%e4%ba%9e%e6%b4%b2%e5%b1%95%ef%bc%9a20%e6%ac%be%e6%b0%ae%e5%8c%96%e9%8e%b5%e5%bf%ab%e5%85%85%e5%85%85%e9%9b%bb%e5%99%a8%e6%88%90%e7%82%ba%e4%ba%ae%e9%bb%9e/