19V 3.42A 65W AC Adapter Power Charger For ASUS A450 K401 K501 F554 F555LA X450 X502 X550 X551 X551MA X552 X552L X554 X555 X555LA X555LB R509 S46 S451 S551L Series laptop World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Compatible with ASUS A450 K401 K501 F554 F555LA X450 X502 X550 X551 X551MA X552 X552L X554 X555 X555LA X555LB R509 S46 S451 S551L Series laptop Connector Size: 5.5*2.5 mm(Standard Size/Read Picture/Careful Buy), Fit Models ADP-65BW B ADP-65AW A ADP-65DW B. Tested Units. In Great Working Condition.