Using Fn Hot Keys
The combination of the Fn key plus another key creates a hot key—a shortcut key sequence—for
various system controls. To use a hot key, press and hold Fn, press the appropriate second key, then
release both keys.
Hot Key
Effect
Fn+F1
Decreases the display brightness.
Fn+F2
Increases the display brightness.
Fn+F5
Toggles among the built-in display, an external display, and simultaneous display on both.
Fn+F7
Mutes the notebook's speakers.
Fn+F8
Toggles the built-in numeric keypad on and off. Does not affect an external keyboard. If Num
Lock is on, the numeric functions are active; otherwise, cursor control is active.
Fn+Lock key*
Toggles Scroll Lock on and off.
Fn+Up arrow
Increases sound volume.
Fn+Down arrow
Decreases sound volume.
*The Lock key is in the top row of the keyboard:
1-10
Product Information
Table 1-4. Fn Hot Keys
HP Omnibook XE3 (Technology Code GF)