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VideoBeagle

macrumors 6502a
Original poster
I have a 2012 iMac. It has an external monitor in addition to the built in.
I'm considering getting an Apple TV.

I know you can send the display from the mac to the ATV. Can you choose which one?
 
Just so you know. If you are attempting to do this over wifi expect tons of lag. After I fished a ether net cable to the atv it worked ok. Still a bit leggy but passable.
 
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