This model is an universal auto and airplane adapter, use for laptop, switching-mode DC to DC power supply, operation at input DC11V to16V, output dc16/18/19/20V, output current 4 Amp max, with many protection functions , such as output over voltage protection, output Short Circuit protection.
1. Please select output voltage of the dc adapter to suit your laptop first, output voltage 16/18/19/20v marked on the adapter body under the 4 bands switch, select output voltage convert by 4 bands switch.
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