Sony VGNZ890H - Manual (Page 35)

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Using Your VAIO Computer >
Using Special-function Buttons
Using Special-function Buttons
Your computer is equipped with special buttons to help you use specific functions of the computer.
Special-function button Functions
S1/S2 buttons
Execute the task that is assigned to each button by default.
You can change the default assignment with the VAIO Control Center.
Drive eject button
Ejects the optical disc drive tray.
If this button does not work, try the substitute drive eject button on the optical disc drive.