If "iusb3hcs" does not appear when you select "Device lower filters" in the details of the "PCI bus" device, you do not have this essential driver installed. To check whether it is installed, open the Device Manager, open the View menu and select "Devices by Connection", then verify it as follows: Only some motherboards offer an option to disable USB 3.0 in the BIOS setup don't expect to find it everywhere.Īnother thing you should check is whether you have the Intel(R) USB 3.0 Host Controller Switch Driver installed. ![]() within Windows 7, the Intel(R) USB 3.0 Host Controller Switch Driver is not installed.in the BIOS setup, the USB 3.0 port(s) are downgraded to USB 2.0. ![]() There are two possible causes for this problem:
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