I have HP 250 G2 laptop with Windows 7 and Ubuntu 14.04 (dual-boot). The laptop has USB 2.0 ports and one USB 3.0 port.
I am using USB 3G mobile broadband modem (Huawei K4201), which is working perfectly on 2.0 ports, but is not being detected on 3.0 port. Strangely other devices (mouse, USB drive …) have no problems with that USB 3.0 port.
I would like to use modem on 3.0 port, because its on left side of the laptop and it is not in the way of mouse movement.