Displayport on old iMac
Is it possible to connect a MacBook Pro with thunderbolt bus to an old iMac with the older type of DisplayPort (i.e. somewhat larger DisplayPort than the newer MiniDisplayPort that fits the later iMacs and macbooks)? I would like to use the older iMac as a monitor for my laptop.
MacBook Pro, OS X Mavericks (10.9.2)