Requires
20V 4.5A (90W) 7.9mm x 5.5mm:
ThinkPad L412, L420, L430, L512,
L520, L530, T400s, T410, T410i, T410s, T410si, T420, T420s, T510, T510i, T520 (Dual Core), T520i (Dual Core), T530 (Dual Core),
T530i (Dual Core), X220, X220i, X230, X230i
Requires 20V 6.75A (135W) 7.9mm x 5.5mm:
ThinkPad W510
Requires
20V 8.5A (170W) 7.9mm x 5.5mm:
ThinkPad
W520, W530, T520 (Quad Core), T520i (Quad Core), T530 (Quad Core),
T530i (Quad Core)
Requires 20V 4.5A (90W) 7.9mm x 5.5mm AND docking adapter (P/N: 04X0856, 04X0856): ThinkPad T430s, T431s
Please email me if unsure of compatibility before buying this item or if you have any other questions.