https://blog.wongcw.com/2018/11/29/ravpower%e7%99%bc%e5%b8%83%e6%96%b0%e6%ac%beusb-pd%e5%85%85%e9%9b%bb%e5%99%a8%ef%bc%9a%e5%85%a7%e7%bd%aegan%e3%80%81%e5%8a%9f%e7%8e%8745w/