Dell Alienware M17x R2 (Early 2010) - Manual (Page 21)

21 CHAPTER 2: GETTING TO KNOW YOUR LAPTOP
Function Keys
NOTE: Depending on the configuration of the laptop you purchased, some
of the function keys may have no associated tasks.
The key is located near the bottom-left corner of the keyboard, and is used
together with other keys to activate certain functions. Hold down the key
along with the key described below:
FI – Suspend Mode
Press to enable suspend mode. In the suspend mode,
the display and selected devices will switch off for less energy
consumption.
F2 – Check Battery Status and Battery Charge Disable/Enable
Press to toggle between the Battery Status Meter,
Battery Charge Disable feature, and Battery Charge Enable feature.
F3 – Mute on/off
Press to enable or disable the mute function.
F4 – Increase Display Brightness
Press to increase the brightness of the display.
F5 – Decrease Display Brightness
Press to decrease the brightness of the display.
F6 – Extend Desktop
Press to switch between the various external display
options available either simultaneously or separately.
F7 – Display Mode
Press to switch between clone mode and extended
desktop mode, when an external display is connected.
F9 – Camera on/off
Press to switch off or switch on the camera.
F10 – Microsoft Mobility Center on/off
Press to launch or close the Microsoft Mobility Center
application.
F11 – AlienFX ® on/off
Press to disable or enable the AlienFX illumination.
F12 –Touch Pad on/off
Press to enable or disable the touch pad function
and the illumination around the touch pad. When the touch pad
function is switched off, the touch pad can still work temporarily
for three to five seconds while the computer reboots into
the Windows ® operating system, or resumes from standby or
hibernate mode.