AcBel Ultra Small Adapter 90W is the world¡¦s smallest & slimmest notebook AC Power adapter featured with lightest in weight, thinnest and smallest in size.Worldwide approved with 10 safety certificates so that people would feel more secure when purchasing and using the productIt¡¦s pure white mirror-effect coated casing looks really elegant to match with any notebook adapter. It is architected with Flyback topology and active PFC. Efficiency is marked as 94% to lower power consumption and save more energy. Another feature - Constant Voltage & Constant Current technology enhances adapter¡¦s stability and slows down the aging of notebook¡¦s internal components. In terms of power protection, provides OVP, OCP, OPP and SCP to protect itself and the notebook from damage due to over use.