... of tips connecter to suit almost all laptops, select output voltage to suit Laptop and Please make sure the polarity of tip ... Averatec, IBM, SONY, DELL, HP, APPLE, NEC, TOSHIBA, COMPAQ, FUJITSU, SAMSUNG, LITEON, DELTA, ACER, LS, SHARP, GATEWAY, LENOVO, HIPRO, ASUS and many others ... to the scale corresponding to the voltage of the Adapter, and then put on The protective cap of the corresponding voltage ...