Story of my life - always forgetting the important bits 🙂 Although I did mention the USB extenders, but failed on the hub $%*&.
So where, I'm at now (I went into the office last night and spent an hour or so on this) is that I'm just working on the Mac Pro, It has a powered USB extender over ethernet, going through to a powered hub, which then goes to a mouse, keyboard and tablet.
What happens now is that it will work OK with one device plugged in, but when you plug another in, neither works. So I thought maybe it was getting too much power and unplugged the power to the extender.
This seemed to work, but for some weird reason if you say unplug the mouse and replug it in, it all stops working. So then you unplug the power to the hub and it will start working with no power going to anything. Plug the power back into the hub and it stops working.
I tried 5 different hubs and the same thing happens with all of them. I also exchanged the extender boxes out as well.
Bottom line is it's working and we know how to get it to work, but I'd really like to understand what's going on. I was wondering if it had something to do with the MacPro allotting power to it and then not being able to deal with any change?
They don't seem to be very flash hubs and extenders and I wondered if there were ones that regulated the power supply better?
Thanks heaps for jumping in MichelPM