This was suggested to use with a small projector we purchased, so we could stream movies from our iphones. It wasn't expensive and for other purposes may work fine, however it won't work for airplaying licensed content such as netflix, and the other thing is that it has a usb power cord, and this plugged into the projector wasn't strong enough to maintain the wifi - we could have solved this by plugging it into a usb plug connected to mains, but in the end we realised we could just unplug our apple tv and use that to watch streamed content through the projector. Please note I'm not a very techie person, this is just our personal experience with trying this dongle, and it may be fine for other purposes.
It has arrived in a good condition, brand new, with a manual. However, the problem was "weak in response" can". In other words, it keeps disconnecting with the home wifi. Even though the internet signal was full, the net speed was great. I couldn't use it as I planned.