No Hub, nothing else on the USB ports - guess it may be as you say, the particular USB controller. Think I'll just dedicate one of my PCs to the KN7000 and not use Go-Back on it. Thanks for all the input.

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)