I got this for my Raspberry Pi after checking on the Pi website that it should work OK and after a bit of trial and error it is now working so it does what it "says on the packet" and for the price you can't really go wrong.
Just a short review for this as there's not much to say.
I bought this for use with my Model B Raspberry Pi. The item is well priced and works flawlessly with the Pi, freeing it from being cabled to my router. Some wireless adapters have compatibility or power issues with the Pi but I have had no issues with this whatsoever.
I've no experience of this device with other devices or operating systems.
Not exactly what I ordered or what was depicted but does the same sort of job. Received a Pocket Ethernet WiFi router. Does the job, just not what I was expecting. Would be five stars if the item was what I ordered.