Dell Alienware M17x R3 (Early 2011) - Manual (Page 38)

CHAPTER 2: GETTING TO KNOW YOUR LAPTOP
36
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 at 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
Press to display the Battery Status Meter.
F3 – Mute on/off
Press to enable or disable the mute function.
F4 – Increase Display Brightness
Press to increase the brightness of the display.