This laptop power supply has adaptors to fit the major manufacturers DC power input sockets, and enough grunt to suit all but the most power demanding laptop models. It also displays the output voltage and automatically adjusts output voltage according to which connector is fitted. Supplied with 10 different connectors to suit a wide variety of different laptops. It can even charge those pesky new Dell laptops! Specifications: Maximum power output: 90W. Voltage range: 12 - 22V. Current: 6A (max). Dimensions: 138(L) x 58(W) x 37(H)mm.