20V 4.5A 90W Replacement Laptop AC Adapter Power Supply Charger+Cord for IBM/Lenovo Thinkpad: L412 L512 L420 L520 SL300 SL400 SL410 SL500 SL510 SL410K Input voltage: 100-240V ~ 1.5A, 50 - 60Hz Output voltage: 20V ~ 4.5A, 90Watt Size of connector: 7.9X5.5mm item is compatible replacement If you don't see your model on the list please contact us This Product Has 12 Months Replacement Warranty