One other problem I have with the term "gaming adapter" is the overuse by the marketeers of the term "gaming". So we have gaming systems, keyboards, monitors, mice, chairs and probably coffee cups. The original meaning of "to game" is "manipulate (a situation), typically in a way that is unfair or unscrupulous." Perhaps the term when used by marketers, is apt.
Reminds me of the overuse of "turbo". --Chuck