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XHCI(4) Device Drivers Manual XHCI(4)

xhciUSB eXtensible Host Controller Interface

xhci* at fdt?
xhci* at pci?
usb* at xhci?

The xhci driver provides support for the USB eXtensible Host Controller Interface, which provides an interface to usb(4) devices.

xHCI controllers support all USB 3.0, 2.0 and 1.x device speeds.

pci(4), usb(4)

The xhci driver appeared in OpenBSD 5.6.

The xhci driver was written by Martin Pieuchot <>.

March 25, 2017 OpenBSD-6.3