.\"
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.\" Copyright (c) 2024 Jesper Schmitz Mouridsen <jsm@freebsd.org>
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.Dd December 17, 2025
.Dt MTW 4
.Os
.Sh NAME
.Nm mtw
.Nd MediaTek MT7601U USB IEEE 802.11n wireless network driver
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device ehci"
.Cd "device uhci"
.Cd "device ohci"
.Cd "device usb"
.Cd "device mtw"
.Cd "device wlan"
.Cd "device wlan_amrr"
.Ed
.Pp
Firmware is also needed, and provided by:
.Bd -ragged -offset indent
.Cd "device mtwfw"
.Ed
.Pp
Alternatively, to load the driver as a module at boot time,
place the following lines in
.Xr loader.conf 5 :
.Bd -literal -offset indent
if_mtw_load="YES"
mtw7601ufw_load="YES"
.Ed
.Sh DESCRIPTION
This module provides support for
MediaTek MT7601U USB wireless network adapters.
If the appropriate hardware is detected,
the driver will be automatically loaded with
.Xr devd 8 .
If driver autoloading is explicitly disabled, enable the module in
.Xr rc.conf 5 or
.Xr loader.conf 5 .
The
.Nm
driver can be configured at runtime with
.Xr ifconfig 8
or at boot with
.Xr rc.conf 5 .
.Sh HARDWARE
The
.Nm
driver supports MediaTek MT7601U based USB wireless network adapters
including (but not all of them tested):
.Pp
.Bl -bullet -compact
.It
Allnet ALL-WA0150N
.It
ASUS USB-N10 v2
.It
D-Link DWA-127 rev B1
.It
Edimax EW-7711UAn v2
.It
Foxconn WFU03
.It
Tenda U2
.It
Tenda W311MI v2
.It
TP-LINK TL-WN727N v4 (tested working)
.It
Yealink WF40
.El
.Sh SEE ALSO
.Xr usb 4 ,
.Xr wlan 4 ,
.Xr netintro 4 ,
.Xr wpa_supplicant 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 7.1
and
.Fx 15.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An James Hastings Aq Mt hastings@openbsd.org
and ported to
.Fx
by
.An Jesper Schmitz Mouridsen Aq Mt jsm@FreeBSD.org .
.Sh BUGS
.Nm
only works in
.Cm station
mode and
.Cm monitor
mode.
The firmware does not reinitialize when reloading the module,
or when rebooting, without first unplugging the device.