LENOVO GUIDE FOR CHOOSING AND USING THE CHARGER: - Know the laptop brand and model. - Check the charger output voltage and current (found on the laptop label or the old charger). - Verify the connector size. - Voltage (V) must match the old charger. - Amperage (A) must be equal to or greater than the old charger. - Charger power (V x A) in watts (W) must be equal to or greater than the old charger. Additional product notes and compatibility details are provided by the manufacturer; please check the label on your laptop to confirm compatibility. Notebook Adapter