EBKk 65W Battery Charger Power Supply for HP probook 430 g1,HP probook 440 g1,hp probook 450 G1,hp probook 460 G1,HP Pavilion G4 G6;Hp EliteBook 745 G2 820 840 850 G1 Folio 9470m,hp 3115m Adapter 18.5V 3.5AYou have a 18.5V 3.5A 65W AC Power Adapter Fast and Safe Charging 7.4mm*5.0mm (With central smart-pin inside)connect the device interface to make the current pass quickly and safely. Compatible typesfor HP probook 450 g1/HP probook 430 g1/HP probook 440 g1/hp probook 460 G1/HP Pavilion G4 G6/Hp EliteBook 745 G2 820 840 850 G1 Folio 9470m/hp 3115m Adapter Multiple ProtectionMagnetic snap-in power adapter charges for Microsoft Surface book Built-in IC chip technology provides Overcharge Protection System/Shortcircuit/Overload protection/Over-heat protection One Year WarrantyYou have a 60-day return and one-year warranty