of docking or berthing interface to a different interface. Such interfaces may be docking/docking, docking/berthing, or berthing/berthing. Previously launched and planned to be launched adapters are listed below:

* ASTP Docking Module: An airlock module that converted U.S. Probe and Drogue to APAS-75. Built by Rockwell International for the 1975 Apollo-Soyuz Test Project mission.