1.Technical Specifications:
1)Input: 11-15V
2)Output:DC20V 3.25A -20V4.5A
3)power: 90W
4)Connector:7.9mm*5.5mm
5)Compatible models:
For IBM/lenvo X60 X61 Z60 Z61 X200 X300 T60 T61 T400 SL400 SL500 Series
For Thinkpad T420 T420S T520 W520 L420 L520 X220 X220t X120e X121e Series