Working Inside Your Computer: Dell OptiPlex GX1 Low-Profile Managed PC Systemsfile:///C|/infodev/2013/eDoc/OpGX1/SQRG/computer.htm[2/21/2013 11:53:01 AM]injury or shock.4. If you are disconnecting a peripheral from the computer or are removing a component from the systemboard, wait 5 seconds after turning off the computer before disconnecting the peripheral or removingthe component to avoid possible damage to the system board.In addition, Dell recommends that you periodically review the safety instructions in your System InformationGuide.Unpacking Your Hardware OptionWhen you remove an option from its shipping carton, you may find it wrapped in antistatic packing materialdesigned to protect it from electrostatic damage. Do not remove the packing material until you are ready toinstall the option.Removing the Computer CoverNOTE: If your chassis has an optional stand for vertical orientation attached to it, remove the optionalstand before you remove the computer cover.Use the following procedure to remove the computer cover:1. Turn off your computer and peripherals, and observe the Caution for Your Personal Safety andProtection of Your Equipment described in "Safety First — For You and Your Computer."2. If you have installed a padlock through the padlock ring on the back panel (see Figure 1), remove thepadlock.Figure 1. Padlock Installed3. Remove the cover.Face the front of the computer and press in the two securing cover-release buttons that are located onthe sides of the cover toward the back (see Figure 2).With the buttons depressed, lift the cover at the back, allowing it to pivot up toward you.Disengage the plastic hooks that secure the cover to the front of the chassis, and lift the cover away.Figure 2. Removing the Computer Cover