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should. It will depend on the software. I currently have a first get with a VGA adapter and it does basically the same. That just supports 1080p.
 
Just read the product description on the apple store which states that it will not only work with the original iPad, but also iPhone 4 and the new iPod touches. I'm guessing it's the 4.3 iOS update that provides the screen mirroring.
 
is there any particular reason why mirroring is not an option for iPad 1?
 
So what's the use of this adapter if it doesn't do screen mirroring?

I suppose just video out, if you don't want to use the current VGA adapter. *shrug* Its only an attractive product to me if the jailbreaking community finds out a way to enable it on all iOS devices.
 
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