Provided by: freebsd-manpages_11.1-3_all 
NAME
kbdmux — keyboard multiplexer
SYNOPSIS
device kbdmux
In /boot/device.hints:
hint.kbdmux.0.disabled="1"
DESCRIPTION
The kbdmux keyboard driver provides support for basic keyboard multiplexing. It is built around the idea
of a “super keyboard”. The kbdmux driver acts as a master keyboard consuming input from all slave
keyboards attached to it.
Slave keyboards can be attached to or detached from the kbdmux keyboard driver with the kbdcontrol(1)
utility.
SEE ALSO
kbdcontrol(1), atkbd(4), syscons(4), ukbd(4), vt(4)
HISTORY
The kbdmux module was implemented in FreeBSD 6.0.
AUTHORS
Maksim Yevmenkin <m_evmenkin@yahoo.com>
CAVEATS
The kbdmux keyboard driver switches all slave keyboards into K_RAW mode. Thus all slave keyboards attached
to the kbdmux keyboard share the same state. The kbdmux keyboard is logically equivalent to one keyboard
with lots of duplicated keys.