Laptop AC adapter For Lenovo ThinkPad 20V 8.5A 170W 6.5*4.0mm--- 42T5284 (AC Power Cable Included) AC Input: 100 ~ 240V 50~60Hz 2.5A DC Output:20V 8.5A 170W Package not included AC Power Cable Compatiblw with P/N:42T5284 Connecter size:7.9*6.0mm;pin in the center