Product detailsAbout this itemFit for Lenovo : ThinkPad P1 P50 P51 P52 P53 P70 P71 P73 W540 W541 T540P P15 P17 T15g X1 Gen 1 2 3 4 ADL170NLC2A ADL170NDC2A ADL170NDC3A ADL170NLC3AConnector: USB Rectangular shape(pin) ?Please confirm the specifications and plug size before purchasing!!(?power might not enough for P71when normal operation)Input:100-240V 50-60Hz.Output: 20V 8.5A 170W Outlet: 3-prong Connecter size: USB Rectangular shape(pin)