Very good analysis. Thanks. This does help explain in part why the Forumslader USB charger can produce so much more power that other chargers at higher speed, it somehow forces the hub to generate more watts with more resistance at those higher speeds.

I can't understand a lot of this stuff, but the graphs towards the bottom of this page tell you what I mean about different USB chargers.
https://translate.googleusercontent....g9zRzdCuSHvqDA