https://blog.wongcw.com/2021/01/31/%e5%89%b5%e8%a6%8b%e6%8e%a8%e5%87%bacfexpress-820-type-b%e5%ad%98%e5%84%b2%e5%8d%a1%e5%8f%8ausb%e8%ae%80%e5%8d%a1%e5%99%a8/