When plugging your HP® Business Notebook into a standard outlet, the HP 65W Smart AC Adapter allows you to conserve its battery life. The laptop adapter manages this by detecting and regulating the right electrical current. You plug one end of the HP 65W smart AC adapter into your notebook or docking station and the other into an outlet. The laptop adapter is compatible with just about every HP laptop, including Chromebooks, Elitebooks, ProBooks, Zbooks, and Convertible PC. This HP 65W smart AC adapter comes with an additional piece, dongle, that is thicker than the regular charging plug. Also, the HP notebook adapter even offsets and regulates electrical spikes and reduces cable stress. This ideal AC laptop adapter is an absolute model as a back-up for travel or everyday use.