New Genuine Lenovo AC Adapter 45N0372 20V 8.5A 170W Square - Yellow Tip Hardware compatibility ThinkPad 170W AC Adapters (slim tip) are supported on the following ThinkPad systems: E440, E450, E455, E460, E465, E470, E550, E550c, E555, E560, L450, L460, L560, L570, P50, P50s, P51, P51s, T440, T440p, T440s, T450, T450s, T460, T460p, T460s, T470, T470p, T560, T570, T540, T540P, T550, W540, W550