V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SEPP
       Secure Electronic Payment Protocol (banking, IBM, Netscape, GTE)


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

Single Edge Processor Package
SEPP

    (SEPP) The caseless daughterboard containing
   Intel's Celeron processor.  A SEPP fits into a Slot 1
   connector.

   (1999-08-04)