KanaaN the mini display port is delivered in simple packaging that suggests at first glance, Accessories for Apple Computers. it is very légé, so you can always have it in the bag of the laptop.
I bought it for the new MacBook Air 11 "so that I can connect to my LCD TV LG42XL6500. It works perfectly, the resolution automatically adapts to full HD. Of course, it is also compatible with lower resolutions. The picture quality is good and the audio transmission works very well. However, it should be considered that this is only possible with the generation MacBook, 2010.
The adapter works then already several months. Recently, I tried it on my Samsung monitor (XL2270HD) which ca also worked.
Conclusion: The adapter fulfills its original purpose 100%. So I can recommend it to anyone who wants to connect a laptop with a mini display port to a LCD or plasma screen. Even projector with HDMI input should work fine.