I am a user of technology, not a technology expert. I wanted something that would boost the wifi signal that my netbook recieved, normally in a hotel. As I understand it, it is not possible to boost and incoming wifi signal (a lot of the devices boost it at the transmitting unit but I don't have access to these in public spaces like hotels). What this device does is replace the netbook internal wifi ariel with an external one.
Does it work? Well it certainly picks up a lot more low strength signals than the internal wifi ariel does. In a test it picked up 9 signals of 10% or lower signal strength whereas the internal ariel picked up 2.
The mount isn't very secure and it just sort of hangs off the top of the netbook but I have found that i can hang it off other things to get better signal reception. Remember it is a highly directional ariel.
I am currently surfing on a 9% signal that my netbook internal ariel didn't even see, speed is very slow but at least it's surfing. It's an expensive bit of kit and yet something else to pack for a trip but it does seem to work.
I am giving it 3 stars as I haven't tried it in a hotel room test yet.
UPDATE ; Having used this in a hotel room, i have asked the supplier for my money back and they have agreed. Sure it pulls in more wifi signals but the 'user experience' of using the wifi doesn't change at all, a poor signal is still a poor signal. Having used it in the setting that i bought it for I have now downgraded my rating from 3 star to 1 star. Save your money, this expensive bit of kit makes no difference as far as I could see.