"The Huntkey ES 90W Notebook Adapter - Ultra Edition showed excellent energy efficiency and compatibility. Its pros are high power efficiency, accessory set and build quality. Its power efficiency reaches 89.4%, which is a very high result. In our test we used notebooks from Toshiba, SAMSUNG, Asus and Dell. The power of 90W was sufficient for all models. We didn't notice any speed difference with the original adapters. No strange noise or smell. The Huntkey ES 90W Notebook Adapter - Ultra Edition gets the Editor's Choice - Gold Award."