Sony VAIO VGCRB40 Owner's Manual page 46

Overview
The upgrading procedures described in this section assume that you are familiar with the general terminology associated
with personal computers, safety practices, required regulatory compliances, and the modification of electronic equipment.
Before upgrading your computer
Disconnect the computer from its power source and from telecommunications links, networks, or modems before you open
the unit or follow any procedures described in this section.
Failure to disconnect your computer from its power source may result in personal injury or equipment damage.
Always turn the power off before you open the computer or connect your computer to peripheral equipment.
Otherwise, damage may occur to the integrated circuits.
Your computer may not be equipped with all of the hardware features mentioned in this section. The interior hardware
configuration of your computer may vary from the illustrations, depending on the computer purchased.
You may need to temporarily remove add-on cards or other components that may be near the slot cover you plan to
remove.
Electrostatic discharge (ESD) can damage disk drives, add-on cards, and other components. Follow the
procedures described here only at an ESD workstation. If such a station is not available, do not work in a carpeted
area and do not handle materials that produce or hold static electricity (for example, cellophane wrappers). Ground
yourself by maintaining continuous contact with an unpainted metal portion of the chassis while performing the
procedure.
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