Lenovo 3000 C ThinkPad R S T W X Series 90W 20V 4.5A AC Power Adapter 92P1105 42T5000.Lenovo Part Number: 92P1105FRU Part Number: 42T5000Compatible Models: Lenovo 3000 C100, ThinkPad R500 SL300 SL400 SL500 T500 T60 T60p T61 T61p W500 X60 X60s SeriesSpecifications:Input: 100-240V~2.5A-0.5A50/60Hz Output: 20V 4.5ATotal Output: 90W