... protection, Short circuit protection, Hot seller,Price advantage. Laptop adapter:Input :100-240V 50-60Hz 1.5AOutput:19V2.1ADC interface ... current, short circuit protection;3, Output power enough;4,The output voltage accuracy;5,The output voltage ripple is small;6, ... Original standard design, 100% compatible with original power supply. 40W 19V2.1A for laptop adapter ...