Sony VGC-RM1N User Manual page 116

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Precautions
Use only specified peripheral equipment and interface cables; otherwise, problems may occur.
Do not use cut or damaged connection cables.
If your computer is brought directly from a cold location to a warm one, moisture may condense inside the computer. In
this case, allow at least one hour before turning on the computer. If any problems occur, unplug the computer and contact
VAIO-Link.
Make sure you disconnect the power cord before cleaning your computer.
To avoid losing data if your computer is damaged, back up your data regularly.