universal ac adapter 15v 16v 18v 18.5 v 19v 19.5 v 20v 22v 24v 70w
dc connector 9 tips tip 1 - 6.4 mm x 4.4 mm sony tip 2 - 6.3 mm x 3.0 mm toshiba tip 3 - 4.8 mm x 1.7 mm hp compaq tip 4 - 5.5 mm x 2.5 mm ibm tip 5 - 5.5 mm x 3.0 mm samsung tip 6 - dell pa-6 model dell tip 7 - 5.5 mm x 2.5 mm gateway toshiba tip 8 - 5.5 mm x 1.5 mm acer tip 9 with the adapter - 5.5 mm x 2.1 mm acer instruction 1 . please make sure the output voltage your device uses is within 15v to 24v . you can find the output voltage on your laptop or the original ac adaptor that comes with your device . 2 . find the correct connector by trying to plug it in the device . we recommend plugging the connector in the device before it is plugged into the ac adapter . 3 . select the correct voltage determined by your laptop just by simply moving the voltage switch button with your finger . item includes ac adapter plug-in connectors and power cord . brand new replacement product works as genuine parts 100 oem compatible overload amp short circuit protection