Dell Inspiron 1501 Latitude E6520 1750 Studio 1555 1420 Replacement 90W Laptop AC Adapter(19.5V 4.62A 7.4*5.0) Replacement power supply AC power adapter was tested to match and/or exceed original product at low price. Power cord included Short circuit and Over Voltage protection This Replacement power supply AC power adapter is 100% compatible with the original power adapter for your laptop.