.\"     $NetBSD: mue.4,v 1.6 2019/08/30 09:22:17 wiz Exp $
.\"     $OpenBSD: mue.4,v 1.2 2018/08/03 06:13:14 jmc Exp $
.\"
.\" Copyright (c) 2018 Kevin Lo <kevlo@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd August 24, 2019
.Dt MUE 4
.Os
.Sh NAME
.Nm mue
.Nd Microchip LAN75xx/LAN78xx 10/100/Gigabit USB Ethernet device
.Sh SYNOPSIS
.Cd "mue*   at uhub?"
.Cd "ukphy* at mii?"
.Sh DESCRIPTION
The
.Nm
driver supports Microchip LAN7500/LAN7505/LAN7515/LAN7850 USB 2.0 Gigabit
Ethernet devices including:
.Pp
.Bl -tag -width Ds -offset indent -compact
.It StarTech USB21000S2
.It Z-TEK ZE582
.El
.Pp
and LAN7800/LAN7801 USB 3.0 Gigabit Ethernet devices including:
.Pp
.Bl -tag -width Ds -offset indent -compact
.It Microchip EVB-LAN7800LC
.It Raspberry Pi 3 Model B+ (USB 2.0)
.El
.Pp
For more information on configuring this device, see
.Xr ifconfig 8 .
.Sh DIAGNOSTICS
See
.Xr usbnet 4
for diagnostics.
.Sh SEE ALSO
.Xr arp 4 ,
.Xr ifmedia 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr ukphy 4 ,
.Xr usb 4 ,
.Xr usbnet 4 ,
.Xr ifconfig.if 5 ,
.Xr ifconfig 8
.Sh HISTORY
The
.Nm
device driver first appeared in
.Ox 6.3
and
.Nx 9.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Kevin Lo Aq Mt kevlo@openbsd.org
for
.Ox and ported to
.Nx by
.An Rin Okuyama Aq Mt rin@netbsd.org .
.Sh BUGS
If the media type is set to other than 1000BASE-T full-duplex,
data transmission becomes quite unstable.
Also, ukphy mistakenly recognizes 1000BASE-T half-duplex as a supported media
type, although the adapters do not support it.