I'm looking forward to AirPlay Mirroring with Mountain Lion.   But a TUAW 
article states that this feature requires "mid-2011 hardware or newer for the 
most part".   

My iMac (late 2009 21.5" Intel Core 2 Duo 3.06GHz 4M - OSX 10.6.8 Snow Leopard) 
appears to meet all the requirements for an upgrade to Mountain Lion.   I can't 
find any caveats on the Apple website.   What is the critical mid-2011 hardware 
that I'm missing?

Regards, Alan

Alan Smith
  iMac 21.5" Intel Core 2 Duo 3.06GHz 4M - OSX 10.6.8
  iPad2; ATV2







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