What adapter(s) do I need to connect a Retina MacBook Pro Thunderbolt output to a 2560x1440 NEC monitor? I've got a 13" Retina MacBook Pro and an NEC PA241W 2560x1440 monitor.  What adapters do I need to connect them at full resolution?
Mini Display Port to Display Port.

http://www.colorwiki.com/wiki/NEC_PA241W_Review#VIDEO_CONNECTIONS

Thunderbolt is in effect Display Port plus more functionality.