Did not work any better with the desktop with Windows 7, but got it to work on my laptop using an active USB3.0 HUB and the version of software that came with the device.
For reference:
* Intel USB3.0 eXtensible Host Controller – 0100 (Microsoft) version 6.3.9600.17393
* Tobii IS driver version 5.28.4.2
REX Dev Desktop
FW: 0.9.3
Tobii EyeX Controller Driver version 1.1.0
Tobii Service version: 1.3.1.5234
Tobii EyeX version 1.3.1.5234
Tobii EyeX Interaction version: 1.5.0.785
Unity SDK working in Unity 5 without issues.