KFD products are UL/ CE / FCC / RoHS certified, Warranty: 30 Days Free Exchange /36 Months Warranty; Input: 100-240V 50-60Hz Output:19V 1.75A 33W 19V 2.37A 45W Connector:4.0*1.35mm; This adapters was made with the highest quality materials.V-0 grade flame retardant,OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)100% compatibility with the original,more safety than other adapter KFD Asus Vivobook 14 15 17 Zenbook Chromebook Charger Asus VivoBook S14 S15 S406UA S510UA X441SA X542UA S410UA D540SA D553MA F453MA F453SA F540LA F540SA F553MA F553SA K541 K541SA K541U X441SA X441UA X453MA X453SA X540SA X541SA X541UJ X541Y X541YA X553M X553MA X553S X553SA notebook PC,Asus Flip Q302L Q503U Q503UA Q504U Q504UA Q302LA Asus VivoBook X510 X510U X510UQ X540 X540 X540LA X541 X541N X541NA X541S X541SA X541U X541UA X542 X542B X542BA X553 X553M X553MA X553S X553S X556 X556U X556UV, Asus Vivobook E402M E402MA E402