MBA External Display Resolution Support

I run a 27" Apple Cinema Display at full resolution (2560x1440) without any problems whatsoever.

 

As long as it's got displayport it should be relatively easy to get a MiniDP - DP cable and just plug it in and go If it uses Dual Link DVI it's a bit more complicated, but Apple do make an adapter for that:

http://store.apple.com/uk/product/MB571Z/A/mini-displayport-to-dual-link-dvi-adapter

It just means you'll lose access to a USB port as well as the Thunderbolt port on the laptop, but you get it back on the adapter.

EDIT: Just checked, it has DP, therefore all you'll need is this or something that does the same:

http://www.amazon.co.uk/StarTech-co...&qid=1376421372&sr=8-1&keywords=mini+dp+to+dp