B atter y Charg er 23ENERGY STAR® EmblemThe EPA's ENERGY STAR® Computers program is a joint effort betweenthe EPA and computer manufacturers to reduce air pollution by promotingenergy-efficient computer products. The EPA estimates that use ofENERGY STAR® computer products can save computer users up to twobillion dollars annually in electricity costs. In turn, this reduction inelectricity usage can reduce emissions of carbon dioxide, the gas primarilyresponsible for the greenhouse effect, and sulfur dioxide and nitrogenoxides, the primary causes of acid rain.You can also help reduce electricity usage and its side effects by turning offyour computer when it is not in use for extended periods of time,particularly at night and on weekends.Simplified Chinese Class A Warning Notice (China Only)On Class A systems, the following warning will appear near the regulatorylabel:Warning: This is a Class A product. In a domestic environment thisproduct may cause radio interference, in which case the user may berequired to take adequate measures.