P50 / P51 / P52 P70 / P71 W540 / W541 / W550s (And other models requiring 170W Slim‑Tip charging). T540p T550 (select variants) Larger ThinkPad systems needing 170W power. Lenovo 170W AC Adapter. DC Output:Slim‑Tip (Rectangular Lenovo Connector) Mains Input:Kettle Lead (C13).
