![]() The responsibilities of the xHCI driver include initializing MMIO registers and host memory-based data structures for xHCI controller hardware, mapping transfer requests from upper layer drivers to Transfer Request Blocks, and submitting the requests to the hardware. The xHCI driver is the USB 3.0 host controller driver. USB 3.0 host controller driver (Usbxhci.sys) The KMDF driver model reduces complexity and improves stability. ![]() Microsoft created the new drivers by using Kernel Mode Driver Framework (KMDF) interfaces.
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