Activating The Function (Fn) Lock; Turning Stealth Mode On/Off; Disabling Stealth Mode In The System Setup (Bios) - Dell Latitude 12 Rugged Extreme (7204) Getting Started Manual

Activating the Function (Fn) lock

1. Press the <Fn> + <Esc> keys
NOTE: Other secondary functions on keys below the top row are not affected
and requires the use of the <Fn> key.
2. Press the <Fn> + <Esc> keys again to deactivate the function lock feature.
The function keys return to their default actions.

Turning Stealth Mode On/Off

1. Press the <Fn> + <F7> key combination (<Fn> key not needed if Fn lock is activated)
to turn on stealth mode.
NOTE: Stealth mode is a secondary function of the <F7> key. The key can be
used to perform other functions on the computer when not used with the <Fn>
key to activate stealth mode.
2. All the lights and sounds are turned off.
3. Press the <Fn> + <F7> key combination again to turn off the stealth mode.
Disabling Stealth Mode in the System Setup
(BIOS)
1. Power off the computer.
2. Power on the computer and at the Dell logo, tap the <F2> key repeatedly to bring up
the System Setup menu.
3. Expand and open the System Configuration menu.
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