● This cable converts a DC plug with an outer diameter of 5.5mm and an inner diameter of 2.1mm to a slim-type, narrow-diameter plug with an outer diameter of 4.5mm and an inner diameter of 3.0mm, used for HP laptops. This only converts the connector shape; it does not convert voltage. ● Female side: Outer diameter 5.5mm x Inner diameter 2.1mm ● Male side: Outer diameter 4.5mm x Inner diameter 3.0mm (for HP laptops) ● Product contents: Power connector adapter cable x 1 Discounts are only available for multiple purchases.