Oneda 90W 19V 4.74A AC/DC Power Adapter for HP Probook 4310s 4320s 4415s 4420s 4425s 4430s 4440s 4441s 4510s 4520s 4525s 4530s 4535s 4540s 4545s 4550s 4710s 4720s 4730s 5310m LaptopCharger Supply Cord Input Voltage: AC 100-240V, Total output power: 90W, Output Voltage: DC 19V, Output current: 4.74A(18.5V, 19.5V / 65W, 45W compatible) (Check Connector Photo) 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.