https://blog.faceutil.com/2017/03/23/%ec%9c%88%eb%8f%84%ec%9a%b010-usb-%eb%b6%80%ed%8c%85%eb%94%94%ec%8a%a4%ed%81%ac-%eb%a7%8c%eb%93%a4%ea%b8%b0-%ed%8c%8c%ec%9d%bc%ed%8f%ac%ed%95%a8-%e3%83%b0/