18.5V 3.5A 4.8*1.7mm 65W AC Laptop Charger Adapter For HP Compaq 6720s 500 510 520 530 540 550 620 625 G3000 pavilion dv4000 - AliExpress
Express Parts for 18.5V 3.5A 65W HP 550 620 625 LAPTOP CHARGER AC ADAPTER POWER SUPPLY LEAD UK ECP 3rd Party Adapter: Amazon.co.uk: Computers & Accessories