Well, that's not a happy thing to hear :-( Because the only other references to this slew of failures I can find suggest an issue with the USB controller on the motherboard of my laptop. 

I think I can try without a hub by using the ASI2600mm as a hub for the filter and guider then a different cable direct to my laptop for the scope. I'll give that a try this evening. 

Thanks
roland
 

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