Glad I saw this, as I am looking for a 19V power supply for my Zotac MAG, running Windows 7 64 bit.
You say it makes no claim of being compatible with Windows 7, but NOWHERE does it say that it's NOT compatible with windows 7, nor does it list what it is compatible with, it just says "Windows". If I had not seen this thread, then I would have assumed it was compatible with all OS versions.
I did a search, and saw this post:
I'll probably still get the P2140, but I'm still looking for any/all info on it - If anyone knows of any other work-arounds, I'd like to see them. Is there a link for the beta software or any info?