Dell Inspiron 15 (3521, Late 2012) - Manual (Page 5)

1 Power button
Press to turn on the computer if it is turned off or in
Sleep state.
Press to put the computer in Sleep state if it is turned on.
Press and hold for 10 seconds to force shut-down the
computer.
NOTE: You can customize the power-button behavior in Power
Options. For more information, see Me and My Dell at
dell.com/support.
2 Left-click button
Press to left click.
3 Touchpad
Move your finger on the touchpad to move the mouse
pointer. Tap to left-click.
4 Right-click button
Press to right click.
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Views
Specifications
Front
Left
Right
Base
Display
Base