You can also take the following steps to prevent damage from electrostatic discharge (ESD):
•When unpacking a
•When transporting a sensitive component, first place it in an antistatic container or packaging.
•Handle all sensitive components in a
The following notice may appear throughout this document to remind you of these precautions:
NOTICE: See “Protecting Against Electrostatic Discharge” in the safety instructions at the front of this guide.
Ergonomic Computing Habits
CAUTION: Improper or prolonged keyboard use may result in injury.
CAUTION: Viewing the monitor screen for extended periods of time may result in eye strain.
For comfort and efficiency, observe the following ergonomic guidelines when you set up and use your computer system:
•Position your system so that the monitor and keyboard are directly in front of you as you work. Special shelves are available (from Dell and other sources) to help you correctly position your keyboard.
•Set the monitor at a comfortable viewing distance (usually 510 to 610 millimeters [20 to 24 inches] from your eyes).
•Make sure that the monitor screen is at eye level or slightly lower when you sit in front of the monitor.
•Adjust the tilt of the monitor, its contrast and brightness settings, and the lighting around you (such as overhead lights, desk lamps, and the curtains or blinds on nearby windows) to minimize reflections and glare on the monitor screen.
•Use a chair that provides good lower back support.
•Keep your forearms horizontal with your wrists in a neutral, comfortable position while you use the keyboard or mouse.
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Always leave space to rest your hands while you use the keyboard or mouse.
Let your upper arms hang naturally at your sides.
Sit erect, with your feet resting on the floor and your thighs level.
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