I purchased this item and it works pretty well, but I did have to install and uninstall and then install again two or three times. A little hassel in the beginning, but now it works fine. One thing I have noticed is that it works best as long as there's a clear line of site between the Dongle and the hub. Also the extent to which the two can be apart is about 12 feet and it does not work between walls. There has to be a clean line of site. It serves it's purpose for what I need because the dongle and the hub are never more than five feet apart and so it works fine. Hope this helps.
-ADAM