Compatible with: Lenovo ThinkPad W540 W550s E440 E450 E555 L450 S431 S440 S531 S540 T540p X240 X250 Ideapad Y720-15IKB; Compatible with: P/N: ADL170NLC2A 45N0372 45N0734 45N0487 45N0514 ADL170NLC3A ADL170NDC3A ADL170NCC3A SK90B200850 Replacement AC Adapter/Charger ,100% Compatible with the device model listed. Charger/Adapter has total 10 Ft Long power cord. Safety Features: Over current protection; Total power protection; Over voltage protection; Short Circuit Protection. Manufactured with the highest quality materials. Certification: FCC, CE and RoHS.