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The essentials in brief:
1. The adapter works very well in combination with a Macbook Pro (2011)
2. video and audio transmission via HDMI fold with no problems (on Toshiba and Sony LCD TV and on an external monitor)
3. Optical: Adapter is pure white, you can see no difference from other (original) adapters from Apple in my view,
4. Price / Performance: top
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Delivery / delivery:
Adapter has been ordered and delivered within 3 days. (Must say at this point that this is pretty good for shipping from Germany to Austria in my opinion). The condition of the delivery was very good. Adapter came wrapped and with plugs for the Mini DisplayPort-end.
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Visual condition:
The adapter is pure white, so you noticed (in my view) hardly or no difference to the original adapters from Apple. Just the color of third-party adapters will be highlighted critical again in the Apple Communitiy. I can confidently say that all to consider this reason to buy: hue to the adapter is to recommend no ifs and buts.
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Power:
In conjunction with a Toshiba LCD TV (37XV635D) and a Sony LCD TV (would have traded a Bravia model), the adapter works fine. Both image and sound are transmitted without difficulty and in perfect quality. A small hurdle there was however: you have audio transmission yet set, so that it goes to the TV via HDMI directly to the Mac. However, this is not a problem and is done directly under System Preferences / Sound.
The transfer of the image on an external LCD monitor is done perfectly.
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Summary:
I can give a strong buy recommendation for this item. From the price / performance ratio ago he is also recommended.