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 installedThe 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 (for your hardware - either C216 or C220), since they install the Intel(R) USB 3.0 Host Controller Switch Driver (iusb3hcs).Technical detailsTechnically, 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.)If the filter driver is not installed, the default configuration will apply: all ports would be directed to USB 2.0.
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As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.or read our to learn how to use this site. Hi.I have a DELL Latitude E6540 with Win7/64. I also have a USB audio interface with its own control software. The device doesn't play nice with Win7's USB3 drivers.
How To Disable Usb 3.0 In Bios Acer
The control software can't communicate with it reliably. I've contacted the manufacturer and they suggested to disable USB3 alltogether. But, now I have USB3 completely disabled in the BIOS.I have done some research and I am curious if it is possible to force the Intel USB 3.0 xHCI driver to use EHCI (USB2.0) for a specific port?I found some information that makes me believe it is possible, but I am not finding anybody on the Windows side of things trying to do this. Mostly Linux users are doing this.Can anyone help me? As I would very much like to keep USB 3.0 support for hard drives I have, but still be able to use this audio interface on one of my ports using the USB2.0 driver.My laptop has 4 USB ports, but they are all 'SS' USB3.0 capable.Here is the info I found that eludes to this fact:Edited by jonas914, 22 August 2014 - 10:13 AM.
According to the Dell website your system is designed to use the Intel USB3.0 xHCI driver.Installing any other USB Driver would probably render the ports useless.The Intel chipset device software released 8/1/2014 version 9.4.0.1027,A03 and the Intel USB3.0 xHCI driver released 6/6/14 version 2.5.4.40,A05 are recommended for your system and available from Dell here.Enable the USB 3.0 setting in the BIOS and purchase a hub.Something like this.Features include USB 2.0 & 3.0 ports. Just might do the trick. @badr0b0t - It's a known issue with the device that USB3 drivers in Windows 7 don't work with it, therefore the manufacturer states to disable USB3 and just let it all be USB2. In my picture above, the MOTU device is showing up under the USB3 driver, but if I can get to show up under the USB2 driver instead without disabling the USB3 driver completely, then it might just work.
Is there something I can change in the registry to force it?@old rocker - I don't want to use another piece of hardware. This is for a portable measurement system, I'll disable USB3 before I use another piece of hardware.
As for bios level support for USB 3.0, I couldn't tell you. Most older motherboards have controls for disabling just about everything, newer ones.