This is an AC adapter, model ADP-60DB, made by NEC. It was used with a netbook. It should also work with PCs other than NEC, as long as the connector size and output voltage are the same, and the output current is less than or equal to this adapter's. Input: AC 100~240V 1.5A 50/60Hz Output: DC 19V 3.16A Connector Outer Diameter: 5.5mm Connector Inner Diameter: 3mm