The connector on most parallel printers is called Centronics. However,
several HP printer models use a connector that is about half the size of the
standard Centronics connector, called mini-Centronics.
This Centronics to mini-Centronics adapter converts the Centronics connector
of a parallel cable (or USB to parallel adapter) to a mini-Centronics allowing
you to use your parallel cable or adapter to connect to your mini-Centronics printer.