OEM Lenovo 90W Power Supply (20v 4.5A). 
90W 20V 4.5A 5.5mm Tip AC Adapter for Lenovo Thinkpad

Power: 90W
Input: AC 100-240V, 50-60Hz
Output: DC 20V, 4.5A
Connecter: 7.9mm x 5.5mm with center pin

Includes power cord. This 90W adapter is the upgrade replacement for the 65W AC adapter models 40Y769740Y770042T441842T528245N0119 (and many others). 



Compatible Models (not limited to)
Lenovo 3000
Lenovo B430 Notebook
Lenovo C100
Lenovo C200
Lenovo N100
Lenovo N200
Lenovo V100
Lenovo V200
Thinkpad E220
Thinkpad E220s
Thinkpad E320
Thinkpad E325
Thinkpad E330
Thinkpad E420
Thinkpad E425
Thinkpad E430
Thinkpad E435
Thinkpad E520
Thinkpad Edge 14
Thinkpad Edge 15
Thinkpad Edge E10
Thinkpad Edge E135
Thinkpad Edge E145
Thinkpad Edge E20
Thinkpad Edge E30
Thinkpad Edge E31
Thinkpad Edge E330
Thinkpad Edge E335
Thinkpad Edge E40
Thinkpad Edge E430
Thinkpad Edge E430C
Thinkpad Edge E435
Thinkpad Edge E445
Thinkpad Edge E50
Thinkpad Edge E530
Thinkpad Edge E535
Thinkpad Edge E545
Thinkpad Edge S430
Thinkpad L410
Thinkpad L412
Thinkpad L420
Thinkpad L421
Thinkpad L430
Thinkpad L510
Thinkpad L512
Thinkpad L520
Thinkpad L530
Thinkpad R400
Thinkpad R500
Thinkpad R60
Thinkpad R60e
Thinkpad R60i
Thinkpad R61
Thinkpad R61e
Thinkpad R61i
Thinkpad R61p
Thinkpad S430
Thinkpad SL300
Thinkpad SL400
Thinkpad SL410
Thinkpad SL410K
Thinkpad SL500
Thinkpad SL510
Thinkpad SL510K
Thinkpad T400
Thinkpad T400S
Thinkpad T410
Thinkpad T410i
Thinkpad T410s
Thinkpad T410si
Thinkpad T420
Thinkpad T420
Thinkpad T420i
Thinkpad T420s
Thinkpad T430
Thinkpad T430I
Thinkpad T430S
Thinkpad T430S
Thinkpad T430SI
Thinkpad T430U
Thinkpad T500
Thinkpad T510
Thinkpad T510i
Thinkpad T520
Thinkpad T530
Thinkpad T530
Thinkpad T60
Thinkpad T60p
Thinkpad T60P
Thinkpad T60t
Thinkpad T61
Thinkpad T61
Thinkpad T61p
Thinkpad T61w
Thinkpad W500
Thinkpad W510
Thinkpad W530
Thinkpad X100e
Thinkpad X120e
Thinkpad X121
Thinkpad X20
Thinkpad X200
Thinkpad X200 Tablet
Thinkpad X200s
Thinkpad X200t
Thinkpad X201
Thinkpad X201 Tablet
Thinkpad X201i
Thinkpad X201s
Thinkpad X201t
Thinkpad X21
Thinkpad X220
Thinkpad X220 Tablet
Thinkpad X220i
Thinkpad X220I Tablet (4294)
Thinkpad X220I Tablet (4298)
Thinkpad X220s
Thinkpad X220t
Thinkpad X230
Thinkpad X300
Thinkpad X301
Thinkpad X301i
Thinkpad X60
Thinkpad X60 Tablet
Thinkpad X60s
Thinkpad X61
Thinkpad X61 Tablet
Thinkpad X61LS
Thinkpad X61s
Thinkpad Z60
Thinkpad Z60m
Thinkpad Z60t
Thinkpad Z61
Thinkpad Z61e
Thinkpad Z61m
Thinkpad Z61p
Thinkpad Z61t