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4 Upgrading your computer60
Installation precautions
Before you install any computer component, we recommend that you
read the following sections. These sections contain important ESD
precautions along with preinstallation and post-installation
instructions.
ESD precautions
Electrostatic discharge (ESD) can damage your processor, disk drives,
expansion boards, and other components. Always observe the
following precautions before you install a computer component:
1 Do not remove a component from its protective packaging until
you are ready to install it.
2 Wear a wrist grounding strap and attach it to a metal part of the
computer before handling components. If a wrist strap is not
available, maintain contact with the computer throughout any
procedure requiring ESD protection.
Preinstallation instructions
Always observe the following before you install any component:
1 Turn off your computer and all the peripherals connected to it
before opening it. Then unplug all cables from the power outlets.
2 Open your computer according to the instructions on page 62.
3 Follow the ESD precautions described above before handling a
computer component.
4 Remove any expansion boards or peripherals that block access to
the DIMM sockets or component connector.
5 See the following sections for specific instructions on the
component you wish to install.
Warning! Not turning off the computer properly before
you start installing the components may cause serious
damage.
Do not attempt the procedures described in the following
sections unless you are a qualified service technician.
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