The short story is that when I connect any USB 2 device to any USB port on the docking station, nothing happens. There's no error message, no lights on the devices, no indication that anything has happened at all. USB 3 devices works fine. The details: The same USB 2 devices work perfectly when plugged directly into the USB port on the Surface. The keyboard, mouse, USB 2 hub, etc, none work from the docking station in any port. USB 3 devices work perfectly plugged into the docking station or directly to the Surface. My USB 3 hard disk, USB 3 hub, USB 3 phone. Here's the cool part: I plug all my devices into my USB 3 hub. I plug the hub directly into the Surface Pro 3 and everything works perfectly. I unplug the hub and plug it into the back of the docking station... and only the USB 3 devices appear, the USB 2 devices are ignored! No lights on the devices, no error messages, no errors in Device manager. Everything is up to date in Windows Update. I see people reporting quirkiness with the latest firmware, but I've searched extensively & haven't found anyone with this exact problem. Microsoft Surface Support said I should return it to the store but my experience with PC hardware/software is telling me these symptoms are very unlikely to be a hardware problem. I'm out of ideas. Suggestions?