Oneda 90W 20V 4.5A AC / DC Laptop Power Adapter for Lenovo Thinkpad Ideapad G40 G50 G70 Y40 B50 Z40 G40 Z50 Z70 S3 S5 S21e S41 Helix X1 Carbon G500 G500s G505 G505s G510 G510s H515 Power Supply Cord Input Voltage: AC 100-240V, Total output power: 90W, Output Voltage: DC 20V, Output current: 4.5A(65W / 45W 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.