PS/2

from The Free On-line Dictionary of Computing (8 July 2008)
PS/2

   <computer> {IBM}'s second generation of {personal computers}.
   The PS/2 series introduced three advances over the PC series:
   3.5" 1.44 megabyte {microfloppy} disks, {VGA} and {8514}
   graphics {display standards}, and the {Micro Channel} bus
   architecture.  The 3.5" disks and VGA can be easily installed
   on other PCs and will become the standard for new compatible
   computers.  The Micro Channel bus allows for multiprocessing
   and less aggravation, but cannot be retrofitted to older PCs.

   PS/2 models 25 and 30 are {ISA}, other models have Micro
   Channel and {ESDI}.

   (1995-11-27)