Dell 3000cn Color Laser Printer - Manual (Page 192)

ENERGY STAR® Emblem
The EPA's ENERGY STAR ® Office Equipment program is a joint effort between the EPA and computer manufacturers to reduce
air pollution by promoting energy-efficient computer products. The EPA estimates that use of ENERGY STAR ® computer
products can save computer users up to two billion dollars annually in electricity costs. In turn, this reduction in electricity
usage can reduce emissions of carbon dioxide, the gas primarily responsible for the greenhouse effect, and sulfur dioxide and
nitrogen oxides, the primary causes of acid rain.
You can also help reduce electricity usage and its side effects by turning off your computer when it is not in use for extended
periods of time, particularly at night and on weekends.