https://blog.wongcw.com/2018/11/20/%e6%96%b0%e6%ac%beipad-pro%e5%8e%9f%e8%a3%9dusb-c%e7%b7%9a%e5%b8%b6%e6%9c%89e-marker%e8%8a%af%e7%89%87%e5%8f%af%e9%81%8e5a%e9%9b%bb%e6%b5%81/