37Upgrading the systemCertain components of the server are upgradeable such as the drives,the CPU, the memory, and the expansion cards. However, for safetypurposes, we do not recommend that you perform these upgradesyourself. If you want to replace or upgrade any of these components,contact your dealer or a qualified service technician for assistance.Important: Observe the installation precautions described in thesubsequent section when installing or removing a servercomponent.Installation precautionsBefore you install any server component, we recommend that you readthe following sections. These sections contain important ESDprecautions along with preinstallation and post-installationinstructions.ESD precautionsElectrostatic discharge (ESD) can damage the processors, motherboard,disk drives, expansion boards, or other components. Always observethe following precautions before you install a server component:1 Do not remove a component from its protective packaging untilyou are ready to install it.2 Wear a wrist grounding strap and attach it to a metal part of theserver before handling components. If a wrist strap is notavailable, maintain contact with the server throughout anyprocedure requiring ESD protection.Preinstallation instructionsAlways observe the following before you install any component:1 Turn off the system and all the peripherals connected to it.2 Unplug all cables from the power outlets.
