Windows 7: USB2.0/USB3.0 hub error - could run faster?

I have a powered hub with 4 X USB3.0 plus 6 X USB2.0. This is attached to a USB3.0 port on the back of my desktop.

For months this hub worked perfectly. I had 4 USB3.0 external hard drives and another 4 or 5 USB2.0 external HDDs, 2 3.5 inchers and 3 2.5 inchers. All worked perfectly.

Then one day, with nothing changed, Windows said 4 times that the USB3.0 external HDDs could function faster on USB3.0 ports. So for some unknown reason the USB3.0 ports were acting as USB2.0 ports....

The next day all was okay again. A couple of days later the "faster" warnings re-occurred.

Things went from working perfectly to working most of the time to working less of the time to when the warnings showed every time. So now the USB3.0 ports acted like USB2.0 ports all the time.

During this time nothing had changed. I have 2 USB3.0 ports at the back of the desktop and I tried them both without any difference.

Then I bought an unpowered 4 USB3.0 ports hub. Transfered the 4 USB3.0 external HDDs to it and it worked perfectly for ONE day. Now this new hub also reports can "run faster on a USB3.0" error message.



I am running Windows 7 64bit with 8Gb main memory

Anyone else experience this?

Anyone else had this problem and fixed it? If so - how?

It is strange that things worked perfectly for months with the first hub and things worked perfectly for ONE day with the second hub!

Help!