The Original ASUS ADP 40KD BB 40W AC Power Adapter Charger is specifically designed for ASUS laptops. With a voltage of 19V and an output current of 2.1A, this black adapter is compatible with various ASUS models and product lines. It is a reliable and efficient power source for keeping your laptop charged and ready for use. Additionally, this adapter complies with the California Prop 65 warning, ensuring it does not contain any harmful chemicals or materials.