Dell Latitude 12 Rugged Extreme 7214 Guide De Mise En Route page 13

Enabling the Function (Fn) lock
1. Press the Fn+Esc keys.
NOTE: Other secondary function keys on 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 the default actions.
Turning stealth mode on/off
1. Press the Fn+F7 key combination (Fn key not needed if Fn lock is enabled) 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 enable 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.
4. Select Stealth Mode Control.
NOTE: Stealth mode is enabled by default.
5. To disable stealth mode uncheck the Enable Stealth Mode option.
6. Click Apply changes and click Exit.
Enabling and disabling the wireless (WiFi) feature
1. To enable wireless Networking, press Fn + PrtScr.
2. Press Fn + PrtScr again to disable wireless Networking.
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