... 3. Competitive Price 4. 2 years warranty For HP Adapter 18.5V 3.5A 7.4 * 5.0mm Condition: Brand New Product ... size: Internal Diameter: 5.0 mm External Diameter: 7.4 mm Compatibility: FOR HP/Compaq Business NoteBook NC NX NW Series. nc2400 ... , nx9420, nw8440 Series, nw9440 Series tc4200 Tablet PC, tc4400 Tablet PC FOR HP 510, FOR HP 530 FOR HP Compaq 2510p, 2710p, 6510b, 6515b, 6710b ...