While reading the setup guide it mentions the importance of finding a USB port on a PC which is not being shared via an internal hub with other system devices such as integrated camera or bluetooth. The guide mentions that there is no good utility for Windows to view this other than Device Manager which doesn't actually give a good view.
However I did find this really excellent free utility which does list the USB controllers, hubs attached to them, and any connected devices in tree form.
It is available at http://www.ftdichip.com/Suppor…ties.htm#MicrosoftUSBView