Just as an aside.... If you are trying to install a secondary antenna or extender via USB or other wired connection.... If you cannot establish proper function of the device.... The problem may be caused by your anit-virus and or firewall software.
When I was installing mine....the anti-virus/firewall software I use ("Vipre") did not like the antenna software. I had to uninstall the Vipre, install the antenna and re-install Vipre.... Everything was fine after that.