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Question: USB controlers work as USB1 only

Hi guys!

All USB ports on M4A78 PRO work as USB1 and not as USB2.
Even a USB2 PCI card functions as USB1!
There appear on devide manager a USB controller as USB2 but no mater where I plug a devide, never connects to this one.

Updated BIOS but nothing happened.

Any clues?

Many thanx,

Nestor