LQM&reg; 18.5V 3.5A 65W Ac Adapter Battery Charger Power Supply for HP Compaq 8710p nc2400 nc4400 nc6120 nc6320 nc6400 nc8430 nx6115 nx6325 nx7300 nx7400 Notebook PC,HP Compaq nw8440 nw9440 8710w Mobile Workstation,HP EliteBook 6930p Notebook PC,HP EliteBook 8730w Mobile Workstation