Sony VGC-LA1 User Manual page 22

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Getting Started
You can bundle the AC adapter cable along with other cables to keep them tidy. Snap open the cable bundler, route the cables through it, and then snap
the cable bundler back shut as shown below:
To disconnect your computer completely from AC power, unplug the AC adapter.
Make sure that the AC outlet is easily accessible.
If you do not use your computer for a long period of time, place the computer into Hibernate mode. See Using Hibernate Mode (page 93). This power
saving mode saves the time of shutting down or resuming.