The Free On-line Dictionary of Computing (30 December 2018):

enhanced parallel port

    (EPP) A parallel port that confirms to the
   IEEE's EPP standard.  An EPP is actually an expansion bus
   that can handle 64 disk drives and other peripherals.

   ["PC Magazine", 1996-01-09, p. 262].

   [Details?  Manufacturers?]

   (1996-04-07)