https://blog.faceutil.com/2017/03/25/%ec%9c%88%eb%8f%84%ec%9a%b010-usb-%ed%94%8c%eb%9e%98%ec%8b%9c-%eb%93%9c%eb%9d%bc%ec%9d%b4%eb%b8%8c%eb%a5%bc-%ec%b0%be%ec%9d%84-%ec%88%98-%ec%97%86%ec%8a%b5%eb%8b%88%eb%8b%a4-%d0%bb/