I’ve taken my HUB3 out of the box, followed the directions and…nothing. The green led on the power adapter is lit, and when I plug my camera into the hub the display says “USB Mode Connecting…” so I know it’s aware that a USB cable has been plugged in but nothing else happens (I can plug the camera directly into the computer USB port and everything is fine). I tried plugging in a USB mouse as per the Trouble Shooting instructions but still nothing. No leds turn on and there is no indication that the computer is attempting to communicate with the camera or the mouse.
So it seems my hub is receiving power and, at least in the case of my camera, devices plugged into it seem to recognize a connection, but no communication with my computer seems to take place.