Ensure reliable power for your Lenovo device with an additional genuine Lenovo 90-watt power adapter. Simply keep one power adapter at home, one at the office, and one in your notebook bag for instant and convenient access to power. This power adapter is perfect as a spare or backup power adapter or charger for compatible Lenovo laptops or all in ones. It is compatible with all Lenovo devices that have the rectangular flat power plug (Slim Tip). It is not compatible with older notebooks that have the round power plug. Lenovo power adapters are so compact that you can always carry one in your notebook bag as a spare. This 90-watt power adapter is just as high quality and powerful as the power adapter that came with your Lenovo notebook.