PCI Mezzanine Card
<hardware> (PMC) A family of low profile mezzanine cards for
VMEbus, Futurebus+, desktop computers and other computer systems with logical and electrical layers based on the
Peripheral Component Interconnect (PCI) specification.
PMC is defined in
IEEE P1386.1 and follows the Common Mezzanine Card (CMC) mechanical specification.
PCI2.0 defines a 4.2 inch by 12.3 inch board that plugs perpendicularly into a mother board.