Recycle a Macbook Pro into an external monitor I recently bought a new Retina Macbook Pro and I would like to know I could in some way recycle the old one into a external display.

So is there some way to use a Macbook Pro as an external monitor?

I know I could use ScreenRecycler, but I'd prefer a "wired" solution.
Use target display mode and a hook the two together using your Thunderbolt port (on new Retina) and mini-displayport on old macbook.

See more here: Target Display Mode