GST Power Adapters MEAN WELL GST Power Adapters are 15W to 360W green adapters that comply with the EISA 2007/DoE Level VI energy efficiency regulations. These adapters feature low power consumption and high working efficiency. The GST devices can effectively fulfill energy saving and carbon reduction. MEAN WELL GST Power Adapters are ideal for use with various consumer electronic devices, telecommunication devices, office facilities, industrial equipment, and various apparatus or systems requiring conformity to energy-related regulations.