Quick detected, driver installation without any problems and fast channel search for much better reception strength when my Tevii 660s (which suddenly reached the HD transmitters only 25% signal quality, while the DVBSky comes with the same computer to 77%). The free included DVB-Viewer is badly cut (especially the recording function). Here one should the couple allow for the full version with, then everything is quite comfortable. Only thunderstorms during recording seem to represent a problem. If the reception is temporarily disturbed, stop recording, and the TV software needs to be restarted, which also initializes the card. But I can live with.