35Opening your systemCaution! Before you proceed, make sure that you have turnedoff your system and all peripherals connected to it. Read the“Preinstallation instructions” on page 33.Warning! DO NOT attempt the procedures in the followingsections unless you are confident of your capability toperform them. Otherwise, ask a service technician forassistance.Removing the system coverYou need to open your system before you can install additionalcomponents.1 Turn off the power to the system unit and unplug all cables.2 Place your system unit on a flat, steady surface.3 Turn the thumbscrews counterclockwise to release the cover (1).Hold the cover with both hands and gently pull back the cover todetach it from the housing (2).
