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+.\"
+.\" Copyright (c) 2011 Hans Petter Selasky. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 24, 2011
+.Dt XHCI 4
+.Os
+.Sh NAME
+.Nm xhci
+.Nd USB eXtensible Host Controller driver
+.Sh SYNOPSIS
+.Cd "device xhci"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the
+.Tn USB
+eXtensible Host Controller Interface,
+which allows use of
+.Tn USB
+1.0, 2.0 and 3.0 devices on the same
+.Tn USB
+port.
+.Pp
+The
+.Tn XHCI
+controller supports
+.Tn USB
+connection speeds up to 4.8Gbps when using a USB 3.0 compliant device.
+.Sh SEE ALSO
+.Xr ehci 4 ,
+.Xr ohci 4 ,
+.Xr uhci 4 ,
+.Xr usb 4
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 8.2 .