Picked up this device about 18 months ago as I was looking for a way to get a better signal from my router. I live in a large house, and the router is one end of the house, and i'm generally at the other, so needed a better connection.
I was pleasantly surprised with this device it comes with a 4dbi aerial which is removal, and you have the option to add a much larger aerial(which is where the fun begins!).
I tested the throughput of this device and it came back with a very respectable 16.43Mbit/s, testing far range, this is a good result.
The software that comes with the device is sufficient if slightly antiquated looking.
It's worth bearing in mind that if you are looking to get a much stronger signal, then it's not THAT much stronger than a typical bundles wireless card. I think most people will purchase this for the use of an external antennae.
I have nothing bad to say about this, top marks