Input Voltage: AC100-240V, Output Voltage:20V,Output current:3.25A,Total output power: 65W,DC pin sizes:7.9*5.5mm Safety Features: Over current protection; Total power protection; Over voltage protection; Short Circuit Protection,100% test before delivery. Fits the following models: IBM / Lenovo T60, Z60 Series (integrated graphics only) IBM / Lenovo ThinkPad T60 - Type 1951 IBM / Lenovo ThinkPad T60p IBM / Lenovo ThinkPad T61 IBM / Lenovo ThinkPad T400, T400s, T500 IBM / Lenovo ThinkPad Z60m, Z60t IBM / Lenovo ThinkPad Z61e, Z61m, Z61t IBM / Lenovo ThinkPad X60 - Type 1706, 1707, 1708, 1709 , 2509, 2501 IBM / Lenovo ThinkPad X60s - Type 1702, 1703, 1704, 1705, 2507, 2508, 2533 IBM / Lenovo ThinkPad X60 Tablet IBM / Lenovo ThinkPad X61 and so on