Dell laptop charger 19.5V 3.34A
AC adapter 19.5 volts 3.34 amps DC 100-240 volts specifications: input: 100 ~ 240 volts / 50-60 Hz output: 19.5 volts 3.34 amps black cord size of the output connector: inner diameter: 3.0 mm outer diameter: 4.5 mm