This article applies to this model FaderPort:
Update: July 10, 2018 - Universal Control 2.8.048221 has a firmware update 1.45 which addresses an issue with Pro Tools dropping FaderPort Classic during sessions for some users, visit FaderPort Classic download page.
Starting with ProTools 8.0.5, Avid no longer supports new development for HUI protocol and has left HUI inside Pro Tools as a 'Legacy Protocol'. A clarification of what is supported in Pro Tools for HUI can be found in the Digidesign User Conference site here: http://duc.avid.com/showthread.php?t=338093.
We have tested FaderPort in HUI mode with many versions of Pro Tools to show the differences in behavior between releases.
Since the release of Pro Tools 12, this chart does not need to change as the functionality matches Pro Tools 11.