I am just a beginner and you may have already done this but –
Something that has just helped me get a USB device working was uninstalling all the ‘history’ of USB/Disks/Portable devices/and others...

After a lot of uninstalling/reinstalling of drivers and software, my problem is solved but I’m not entirely sure why. Nothing individually made any difference. It’s as though there was some sort of...

Thanks - mine certainly looks inadequate. Unsurprisingly every port (2 USB3.0 and 4USB2.0) is in "Hub #1".

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Thanks. This would have been great if it worked but, sadly, it didn't.

My computer has only the USB 3.0 Root Hub. No 'Generic USB Hub' at all. Hence I am wondering if this is the problem with my device not working but I may be clutching at straws.

Thanks for reply. I can't find anything about USB2 in BIOS. Not entirely sure what I would be looking for and where.

I have a new (May 2017) desktop PC running latest Windows 10 vn1703 with 2 USB 3.0 ports on the front and 4 USB 2.0 ports on the back.

Device Manager only lists USB 3.0, i.e. one 'USB 3.0...