Three numbers decide the choice of power supply: voltage — usually 19 V or 20 V — current in amps, and wattage, which starts at 33 W for compact ASUS models and ends at 150 W for the most powerful laptops. The plug size matters just as much, 5.5x2.5 mm for instance, because a mismatched adapter simply will not fit the socket. Besides mains units for Acer, ASUS and Apple machines, there are also Akyga car adapters for working on the road.
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Three numbers decide the choice of power supply: voltage — usually 19 V or 20 V — current in amps, and wattage, which starts at 33 W for compact ASUS models and ends at 150 W for the most powerful laptops. The plug size matters just as much, 5.5x2.5 mm for instance, because a mismatched adapter simply will not fit the socket. Besides mains units for Acer, ASUS and Apple machines, there are also Akyga car adapters for working on the road.