After plugging the USB dongle for the first time, you need to do the following:

  1. Use StellarMate Serial Port Assistant tool assign a permanent designation to the USB dongle.
  2. Configure KStars to mark GPS as the primary source for Location & Time updates.
  3. Create an Equipment profile with the GPSD driver selected in one of the Aux. dropdowns.

The following is a video tutorial that covers all the steps above: