[jwells89]

Sadly it's been common for USB hubs to be dodgy ever since the advent of USB 3. I rarely had trouble out of 1.x and 2.x hubs, but 3.x+ hubs are consistently trouble. The only ones that haven't been problematic are those integrated into Thunderbolt docks, probably because those undergo more stringent certifications.

[wtallis]

Are the ones in Thunderbolt docks actually USB hubs, or just USB host controllers speaking PCIe to the Thunderbolt controller?

[jwells89]

System Profiler labels those in my CalDigit TS4 as hubs, but it's entirely possible that's not accurate.