Oneda 65W 19V 3.42A Power Adapter Laptop Charger for Acer Aspire M3 V3-551 571 V5-121 131 171 431 471 531 571 571P 572P 573G S3-391 S3-371 M3-581T M5-481PT M5-481T M5-581T M5-583P R3-131T 471T R7-572 Input Voltage: AC 100-240V, Total output power: 65W, Output Voltage: DC 19V, Output current: 3.42A (45W, 40W, 30W Compatible) Improve the service guarantee, Satisfaction guaranteed and backed by a one year replacement warranty. Oneda new high-quality power supply adapter, a good reputation, as has always insisted on manufacturing quality products. Reliable circuit board design: overcurrent, overvoltage, overload, temperature and short circuit protection. Core security components, multiple protection and safer. Comprehensive environmental testing: to ensure the safety of products, apart from the strict implementation of 72 hours aging test, the test must also deal with a variety of physical and destruction, 100% quality assurance testing.