3-2 Option InstallationPRECAUTIONSTake care when working inside the system and when handling computer components. Avoidelectric shock or personal injury by observing the following warning.WARNING: Before removing the access cover,turn off the power and unplug the system powercable. Power is removed only when the powercable is unplugged.Static electricity and improper installation procedures can damage computer components.Protect computer components by following these safety instructions.CAUTION: Electrostatic discharge can damagecomputer components. Discharge staticelectricity by touching a metal object beforeremoving the access cover. Avoid carpets in cool, dry areas. Leave an option, such as a board or chip, in itsanti-static packaging until ready to install it. Dissipate static electricity before handling any system components (boards, chips,etc.) by touching a grounded metal object, such as the system’s unpainted metalchassis.If possible, use anti-static devices, such as wrist straps and floor mats. Always hold a chip or board by its edges. Avoid touching the components on thechip or board. Take care when connecting or disconnecting cables. A damaged cable can cause ashort in the electrical circuit. Misaligned connector pins can cause damage tosystem components at power-on.When installing a cable, route the cable so it is not pinched by other componentsand is out of the path of the system unit cover. Prevent damage to the connectorsby aligning connector pins before you connect the cable. When disconnecting a cable, always pull on the cable connector or strain-reliefloop, not on the cable.