Techno Earth&reg; New! Ac Power Adapter for Hp Pavilion Dv1540us / Dv1540ca / Dv1550 / Dv1550se / Dv1580 65w 18.5v 3.5a New! Ac Power Adapter for HP Pavilion DV1540US / DV1540CA / DV1550 / DV1550SE / DV1580 65W 18.5V 3.5A Input : Ac 100-240V (Worldwide Use) Output : Dc 18.5V Outlet : 3-Prong Connector size : 4.8 mm x 1.7 mm