High Power Output: 170W (20V 8.5A) for fast, stable charging of Lenovo Thinkpad laptops Wide Compatibility: Slim square tip fits Thinkpad P1 P50 P51 P52 P53 P70 P71 P73 W540 W541 T540P P15 P17 T15g X1 Gen 1 2 3 4 Laptop; power adapter ADL170NDC2A ADL170NDC3A ADL170NLC3A ADL170NLC2A Universal Voltage Support: 100240V input (5060Hz) for reliable use at home or abroad Comprehensive Safety Protection: Safeguards against short-circuit, over-current, over-voltage, and overheating; compact and lightweight design for portability Durability and Extended Reach: Sturdy shell for long-lasting use; 10-foot total cable length with 6-foot charger cord and 4-foot power cord for flexible placement