plug and play

from The Free On-line Dictionary of Computing (8 July 2008)

plug and play

   <jargon> 1. Hardware or software that, after being installed
   ("plugged in"), can immediately be used ("played with"), as
   opposed to hardware or software which requires configuration.

   See also {turnkey}, {plug and pray}.

   2. A new recruit who needs no training.  "The new guy, John,
   is great.  He's totally plug-and-play."

   (1997-03-30)