Input Spec: AC 100-240V; Output Spec: DC 20V 3.25A 65W AC Adapter for Lenovo Laptop; Connector size: 4.0 * 1.7MM. Total Length of DC cable for Lenovo Charger: 1.8M 45W. Compatible with Lenovo IdeaPad Laptops. Note: Also works with 65W 20V 3.25A & 45W 20V 2.25A models.