https://blog.faceutil.com/2017/10/16/%ec%99%b8%ec%9e%a5%ed%95%98%eb%93%9c-%eb%b0%8f-usb-%eb%b0%94%eb%a1%9c%ea%b0%80%ea%b8%b0-%eb%b0%94%ec%9d%b4%eb%9f%ac%ec%8a%a4-%ea%b0%84%eb%8b%a8-1%eb%b6%84-%ec%b9%98%eb%a3%8c-%eb%b0%a9%eb%b2%95cure-ex/