Sony VGN Z720D - VAIO Z Series User Manual page 32

Using Your VAIO Computer >
Using the Keyboard
Combinations/Feature
Fn + (F12): hibernate
Functions
Provides the lowest level of power consumption. When you execute this command, the states
of the system and the connected peripheral devices are saved to the built-in storage device and
the system power is turned off. To return the system to its original state, use the power button
to turn on the power.
For details on power management, see Using the Power Saving Modes
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(page 127).