Keyboard:
ToggleKeys-
Turns on ToggleKeys, which instructs your computer to play a
high sound when the CAPS LOCK, SCROLL LOCK, or
NUM LOCK key
is switched on and a low
sound when any of those keys are switched off.
Check the ToggleKeys box and then click
Settings where you can
can chose to use the Keyboard shortcut which will
turn ToggleKeys
on and off when you hold down
the Num Lock
key for five seconds.