When I plug-in the harddrive directly to the Macbook everything is fine.
When I plug-in an Apple Thunderbolt display to the Macbook's Thunderbolt2 port and then plug-in the harddrive to the USB2.0 port of the display, it works too but it's very slow due to USB2.0 limitation.
So I bought the Anker USB hub and thought it would be alright as long as it has an external power supply. But when I plug-in the hub to the USB3 port of the Macbook and then attach the harddrive to the hub it doesn't work. The drive gets mounted and unmounted automatically in OSX all the time.
Basically like this:
Macbook USB3 ------ USB3 Harddrive OK! Macbook TB2 ------ Display USB2 ------ USB3 Harddrive OK! Macbook USB3 ------ Hub USB3 ------ USB3 Harddrive Not working :-(
What's going on?