https://blog.faceutil.com/2017/10/12/%eb%a9%80%ed%8b%b0-%eb%b6%80%ed%8c%85-%eb%a7%8c%eb%8a%a5-usb%eb%a5%bc-%eb%a7%8c%eb%93%a4%ea%b8%b0%ec%9c%84%ed%95%9c-%ec%9e%90%eb%a3%8c-%e3%81%bb/