Lenovo ThinkCentre M55 User Manual - Page 33

Tools required To install some options in your computer, you might need a flat-blade or Phillips screwdriver. Additional tools might be needed for certain options. See the instructions that come with the option. Handling static-sensitive devices Static electricity, although harmless to you, can seriously damage computer components and options. When you add an option, do not open the static-protective package containing the option until you are instructed to do so. When you handle options and other computer components, take these precautions to avoid static electricity damage: v Limit your movement. Movement can cause static electricity to build up around you. v Always handle components carefully. Handle adapters and memory modules by the edges. Never touch any exposed circuitry. v Prevent others from touching components. v When you install a new option, touch the static-protective package containing the option to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body. v When possible, remove the option and install it directly in the computer without setting the option down. When this is not possible, place the static-protective package that the option came in on a smooth, level surface and place the option on it. v Do not place the option on the computer cover or other metal surface. Chapter 3. Installing options 17