... .5mm SpecificationReplacement Laptop adapter for Thinkpad 16V 3.5A AC AdapterInput: AC100-240V (worldwide use)Output: DC16V 3.5APower: 56WOutlet: 3-prongDC Connecter size: Internal ... , T40, T41ThinkPad X20, X21, X22, X23, X30, X31, X40ThinkPad i1200 Series, i1300 Series, i1400 Series, i1500 Series, i1700 Series