Function

Hotkey

 

 

Display system information.

fn+esc

 

 

Decrease screen brightness

fn+f2

 

 

Increase screen brightness

fn+f3

 

 

Switch the screen image between computer display and

fn+f4

external display.

 

 

 

Launch Internet Explorer

fn+f6

 

 

Mute speaker sound.

fn+f7

 

 

Decrease speaker sound.

fn+f8

 

 

Increase speaker sound.

fn+f9

 

 

Play previous track.

fn+f10

 

 

Play, pause, or resume optical disc.

fn+f11

 

 

Play next track.

fn+f12

 

 

To use a hotkey command on the computer keyboard, follow either of these steps:

●Briefly press the fn key, and then briefly press the second key of the hotkey command.

– or –

●Press and hold down the fn key, briefly press the second key of the hotkey command, and then release both keys at the same time.

Displaying system information

Press fn+esc to display information about system hardware components and the system BIOS version number.

System information is displayed. The version of the system BIOS (basic input-output system) is labeled as the BIOS date. On some computer models, the BIOS date is displayed in decimal format. The BIOS date is sometimes called the system ROM version number.

Decreasing screen brightness

Press fn+f2 to decrease screen brightness. Hold down the hotkey to decrease the brightness level incrementally.

Increasing screen brightness

Press fn+f3 to increase screen brightness. Hold down the hotkey to increase the brightness level incrementally.

Switching the screen image

Press fn+f4 to switch the screen image among display devices connected to the system. For example, if a monitor is connected to the computer, pressing fn+f4 alternates the screen image from computer display to monitor display to simultaneous display on both the computer and the monitor.

22 Chapter 5 Pointing devices and keyboard