• Intel Usb 3 And 31 Extensible Host Controller Driver Windows 10 1
• Intel Usb 3 And 31 Extensible Host Controller Driver Windows 10 64
• Intel Extensible Host Controller Driver

Discus and support Intel (R) USB 3.0 eXtensible Host Controller - 1.0 (Microsoft), Intel (R) Wireless Bluetooth(R) in Windows 10 Drivers and Hardware to solve the problem; Hi guys, I have a Lenovo y50-70 and it recently had an upgrade to Windows 10. Unfortunately, the latest USB 3.0 driver from Microsoft had over-ride.

Most USB 3.0 chipsets (including those built into the Intel chipset) are supported without. ASMedia USB3.0 eXtensible Host Controller driver. I've checked my device manager and the Intel® USB 3.0 eXtensible Host Controller is now missing. I've tried to reinstall the driver unfortunately intel does not support windows 10 usb drivers. I've also tried uninstalling it then restart to automatically reinstall but the problem is still the same. An 'Intel(R) USB 3.0/3.1 eXtensible Host Controller Driver' named iusb3xhc.sys, has to be installed by pointing to the file named iusb3xhc.inf (after the installation the related device is named 'Intel(R) USB 3.0/3.1 eXtensible Host Controller').

On a Windows 7 machine with an Intel USB 3.0 xHCI Controller (*), the USB 3.0 ports function as USB 2.0 ports -- i.e. devices connected to the USB 3.0 ports (e.g. a blue-colored port) still appear under the USB 2.0 (EHCI) controller in the Device Manager and function at USB 2.0 rate.

(*) Intel® 7 Series/C216 Chipset, although the same should happen on Intel® 8 Series/C220 Chipset

1 Answer

There are two possible causes for this problem:

• in the BIOS setup, the USB 3.0 port(s) are downgraded to USB 2.0
• within Windows 7, the Intel(R) USB 3.0 Host Controller Switch Driver is not installed

The BIOS option:

Only some motherboards offer an option to disable USB 3.0 in the BIOS setup; don't expect to find it everywhere.

The Windows driver option:

Another thing you should check is whether you have the Intel(R) USB 3.0 Host Controller Switch 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:

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 install it, you should reinstall Intel's drivers (for your hardware -- either C216 or C220), since they install the Intel(R) USB 3.0 Host Controller Switch Driver (iusb3hcs).

Technical details

Technically, the iusb3hcs driver is installed as a device lower filter of the PCI bus device. The filter driver's goal is to initialize the Intel-specific XUSB2PR register during PCI bus startup. This register allows per-port configuration, to either direct it to the XHCI (USB 3.0) or EHCI (USB 2.0) controller. (Fun fact: The equivalent Linux code can be found here.)

If the filter driver is not installed, the default configuration will apply: all ports would be directed to USB 2.0.

Intel Usb 3 And 31 Extensible Host Controller Driver Windows 10 1

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Discus and support Intel® USB 3.0 eXtensible Host Controller driver in Windows 10 Drivers and Hardware to solve the problem; Hello to everyone, So, before some time I had Win 8 and everything was fine. After a while I have had installed fresh Win 8.1 system. After that I... Discussion in 'Windows 10 Drivers and Hardware' started by insomnia982, Oct 14, 2015.

Intel Usb 3 And 31 Extensible Host Controller Driver Windows 10 64

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