ENERGY STAR An adapter that has earned the ENERGY STAR mark meets strict energy-efficiency guidelines set by the US Environmental Protection Agency (EPA) and the US Department of Energy (DOE). On average, 35 percent more efficient than conventional models. Are often lighter and smaller in size, which makes it easier for consumers to transport products like laptops. Saving energy prevents pollution. By choosing ENERGY STAR, you are helping prevent global warming and promote cleaner air without sacrificing the product quality and performance you expect. If all external power adapters in use in the United States were ENERGY STAR qualified, we would save over 5 billion kWh of energy and prevent the release of more than 4 million tons of greenhouse gas emissions into our environment. The Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS) From 1 st July 2006, lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ether will be banned from new electrical and electronic equipment. The RoHS Directive requires that manufacturers be able to demonstrate minimal levels of the following identified substances: Lead (Pb) Hexavalent chromium (Cr +6) Mercury (Hg) Polybrominated biphenyl (PBB) Cadmium (Cd) Polybrominated diphenyl ether (PBDE)