It does not have any relevance to any particular port.
It removes the data/driver references from wherever these are stored as well as the registry entries pertaining to these.
If you look at the screenshot in the link I have provided, you should be able to make out this better.
Hmmmm things are not quite as they seemed at first.
It appears to be a problem with one particular USB header. I could have sworn the problem was on two different headers. But I just tested it on my many USB ports and the problem is only occurring on one header now. I would have put my mortage on it that it was not working on two different header. Admittedly i had not tried the USB header hard wired to the mobo (on the back), upon trying those all seems fine. Also i have a usb bracket on the back into another header which is fine.
I need to do some further testing to be sure but i'm guessing some damage somewhere between header and case usb ports.
I'll post back when i have diagnosed further.
Thanks for everyone input... will report back.
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