I found this helpful.
http://www.fansproject.com/?p=269
It will help you tell the difference between the real and the ko version, the only problem is, you pretty much have to have them in hand to make the comparison. I have a ko version and the real version, and they are surprisingly simlar in look and feel. I do find that the ko one doesn't seem to lock on as tight and therefore doesn't display quite as well, but it's pretty close.
