I try to use it to mine a scrypt with a MSI GT 710, but it says plug one (no usb detected)
anyone kind enough to figure out what to do?
The official cgminer only mines bitcoin for the last 4 years. Seek help in the altcoin mining section for unofficial forks of cgminer that still mine other coins.
Remember the days of cgminer or bfgminer & cgwatcher, oh the good ole days. Now most updates in GUI have made everything plug & play, don't miss the command line of mining years one bit. Somewhat like all software over the years, Windows or Mac & Linux (Linux greatly changing over the years, most people in the world don't even know there's that many operating systems).
//Still testing with low end GPU's was a bit of fun, but quickly overtaken by new hardware & or new technology