Windows 7 needed a driver. Panda site was easy to find. Performed well.
In Linux Mint it was automatically found but painfully slow. (no screenie)
Nano Windows drivers here. Edimax Nano worked better on Linux. Even though it does not quite have the signal strength (not evident by the screen grab here) it seems to have an edge on Panda.
This is Nano sitting next to the router. So it's all about distance. The first tests were about 40 feet from the router.