sepp

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

Single Edge Processor Package
SEPP

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

   (1999-08-04)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

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