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+.\" $NetBSD: umcs.4,v 1.3 2019/05/07 22:00:10 mrg Exp $
+.\"
+.\" Copyright (c) 2014 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Martin Husemann.
+.\"
+.\" 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.
+.\"
+.Dd May 7, 2019
+.Dt UMCS 4
+.Os
+.Sh NAME
+.Nm umcs
+.Nd USB multiport serial adapters driver
+.Sh SYNOPSIS
+.Cd "umcs* at uhub?"
+.Cd "ucom* at umcs?"
+.Sh HARDWARE
+The
+.Nm
+driver supports a wide variety of hardware based on the
+MosChip 7810, 7820, 7840 chipsets and clones thereof.
+Devices range from single port to eight port (implemented as a
+USB hub and two
+.Nm umcs
+four port instances behind it).
+.Pp
+Examples of hardware known to work with this driver are:
+.Pp
+.Bl -tag -width Dv -offset indent -compact
+.It LOGILINK AU0033
+.El
+.Sh DESCRIPTION
+The
+.Nm
+driver attaches the MosChip multiport chipset with individual port
+drivers via
+.Xr ucom 4 ,
+which makes it behave like a
+.Xr tty 4 .
+.Sh SEE ALSO
+.Xr tty 4 ,
+.Xr ucom 4 ,
+.Xr usb 4
+.Sh HISTORY
+The
+.Nm
+driver
+appeared in
+.Nx 7 .