I have the same problem. It flashes red when connected, and it’s in the device manager, but the Tobii software can not seems to find it.
Not sure about how much power is needed from the usb-ports, but I can run my Oculus Rift via USB so hopefully it’s powerful enough?
I have the same numbers as Robert in the About section, except Firmware Version is blank (because it couldn’t find the EyeX and install the firmware)
I’m not really willing to upgrade to 8.1 for this to work :/