About this itemInput Voltage: 100-240 volts; Frequency: 50/60 Hz (worldwide compatible) 19.5 voltage; Current: 6.7 ampsCompatibility : Alienware 13 Alienware Alpha Alienware M11x Alienware M11x R2 Alienware M11x R3 Inspiron 14 5000 Series (5458) Inspiron 1420 Inspiron 14R (5420) Inspiron 14R (N4010)Studio 1747 Studio XPS 16 (1640) Studio XPS 16 (1645) Vostro 1510 Vostro 1520 Vostro 1540 Vostro 1700 Vostro 1710 Vostro 1720 Vostro 2510,Vostro 330 XPS 15 (L501X) XPS 15 (L502x) XPS 15 (L521X) XPS 17 (L701X) XPS 17 (L702X)Latitude 13 Latitude 131L Latitude 14 (E5470) SKL-HLatitude 2110 Latitude 2120 Latitude 3330 Latitude D420 Latitude D430 Latitude D520Precision 15 3000 Series (3510) Precision M4700 Precision M60 Precision M6300 Precision M70 Precision M90 Studio 1457.