The kensington wall laptop power adapter is ideal whether youre looking for a replacement or a secondary power adapter at home or on the move it provides the reliability that you need and is compatible with a wide range of laptops from leading manufacturers features output voltage 14 17 vdc 52a max 17 21vdc 474a max output power 90w reliable secondary power adapter for homeoffice or on the go smart power technology senses the amount of power needed to charge your laptop compact dime