Here's the bit I was looking for: http://www.duetdisplay.com/#compatibility Comp...

		Kluny on Dec 15, 2014 \| parent \| context \| favorite \| on: Use your iDevice as an extra display for your Mac Here's the bit I was looking for: http://www.duetdisplay.com/#compatibility Compatible with all iPads, nice! I have an old iPad 1 lying around that runs very few of the apps I would like to use with it (Office suite and VLC, mostly), so I've been looking for a way to repurpose it, and this might be it.

Looks like they changed it to "All iPad hardware with iOS 6 and above". Which means no iPad 1. :(