These handy adapters make the use of DB25 connections in prototyping projects much easier. They are designed to quickly and easily mount a DB25 connector onto a breadboard circuit, but they are also very useful as a permanent part of a perfboard circuit. Odd pin spacing on DB25 connectors typically makes use of a DB25 connector on perfboard difficult and awkward. These adapters solve that problem by providing a standard 0.1' pin spacing, giving you a much cleaner result. The individual pins on each adapter are numbered according to the appropriate DB25 connector pinout.
Adapters are available with both male and female DB25 connectors. They are also available with other styles of connectors.