https://blog.faceutil.com/2017/05/19/%ec%9c%88%eb%8f%84%ec%9a%b07-usb-%ec%84%a4%ec%b9%98-%eb%b6%80%ed%8c%85%eb%94%94%ec%8a%a4%ed%81%ac-%eb%a7%8c%eb%93%a4%ea%b8%b0-%eb%b9%a0%eb%a5%b4%ea%b3%a0-%ec%89%bd%ea%b3%a0-%ec%83%88%eb%a1%9c/