I have 6 ports at back and 2 on top of my Coolermaster Mid-Tower Case.
After repeatedly plugging in and unplugging my usb scanner in rear ports and on top, eventually it runs at USB2 speed, but not without initial repeated warnings that it will run at half-speed (in which case the scanner would in fact take double the time to scan something).
I also noticed that whenever removing any device whether its esata, or usb, via right click in system tray, it would take almost 60seconds before it shows the 'it is safe to remove now' message.
Now with USBView open, I plugged a usb drive into both my top usb ports, and saw that they are both showing up in the 3A3C.
And yes, when I connect my scanner via either of the ports on top of my case (which according to usbview are both 3A3C), if I ignore the 'your device can run faster' message, the device runs really slowly, but if I continue reconnecting multiple times, then the device runs at the normal speed.
Btw, when you say USB Hub, I assme you mean some sort of expander hub accessory. I don't own one of these. I'm not using a single USB port to share multiple devices.
Edited by phickspc, 12 March 2018 - 08:23 AM.