I have a special USB audio interface that does not communicate to its software in Win7 using USB3 drivers. Disabling USB3 altogether works fine with it, but I prefer not to do that.
When USB3 is enabled, the device always shows up under the xHCI driver instead of the EHCI driver. Is there some way to force it to only use the EHCI driver in Windows????
Attached is a photo of Device Manager how it shows up with USB3 enabled. If there was some way to tell Windows that this device is USB2 only?
Thanks for joining the Chipset community.
I understand you would like to force USB 3.0 to work as 2.0.
To downgrade hardware ports it might be through a BIOS setting. There may be some kind of compatibility setting for your USB controller in the BIOS, but I recommend contacting your motherboard manufacturer for information about that.
I also know that if you do not load USB 3.0 drivers, the ports will work as 2.0 speeds.