Does your USB port have a power connector, and if so is it currently on? I 
would expect that to be the most probable problem, though generally, when I 
plug in a USB device that the computer cannot provide enough power for, the 
computer will put up a dialog box indicating so.
Also, I am fairly  certain that modern USB hubs cannot only  support USB-3, but 
the one my office provided me isolates the USB-2 devices from the usb-3 devices 
in order to provide better performance.
Jonathan Cohn


> On May 25, 2020, at 2:37 PM, Anders Holmberg <and...@pipkrokodil.se> wrote:
> 
> Hi!
> I have a samsung external spinning harddrive which i normally connects to a 7 
> port usb 3 hub.
> For some reason the drive does not work any more when i connect it to the usb 
> hub.
> When i connect it to the mac directly it doesn’t.
> THough it has worked when i connected it to the usb hub so i am wondering if 
> the hub begins to fail.
> I actually have tried another usb 3 cable but it did not work.
> All other devices works like a charm when they are connected to the hub so i 
> am not sure what’s going on really.
> I  am trying to find a thunderbolt hub with usb 3 ports.
> But i am not sure if such a beast exists.
> /A
> 
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