The United States will begin in 2016 for external power adapter to enforce energy efficiency requirements Class VI

February 10, 2014, the US Department of Energy (DOE) published a final rule on the external power to propose new energy efficiency requirements. The new regulations apply to all work directly external power supply, including Class A standard power in 2007 and has been covered in previous DOE regulations did not include the power supply, for example,Multiple output external power

• Brand output power greater than 250 watt external power supply
• Part of the primary or in part by a motor-driven product battery charging external power supply

Original link：http://www.regulations.gov/documentDetailD=EERE-2008-BT-STD-0005-0219 
Original link：http://www.tuv-sud.cn