Features: 1.8 different size detachable plugs, Works with Most Notebook Computers. 2.Adjustable output voltage, DC 12V/15V/16V/18V/19V/20V/22V/24V 3.Built-in dual -protection design, overload protection, over voltage protection. 4.AC Input Range: AC110-240V 5.Indicator:LED 6.Compatible Brand:Universal 7.Output Range: 12V-24V 8.Voltage adjustment ≤+/-1V 9.Load regulation≤1% 10. Plug: EU/US plug. ( please remark the plug which one do you need,or we will send out randomly. ) ​Note: Without retail box. INPUT:AC110V-240VAC~50/60HZ 1.3A MAX DC12(9-15V) 10AMAX OUTPUT:12/15/16/18V 5.5A MAX 19/20/22/24V 4A MAX USB PORT:5V1A Abbreviation： 12V5.5A 15V5.5A 16V5.5A 18V5.5A 19V4A 20V4A 22V4A 24V4A Products that are output in this range can be used.With 7 gears adjustable. The 7 gear positions are: 12V15V16V18V19V20V24V DC has： (4.0*1.7)(4.8*1.7)(5.0*1.4)(5.5*1.5)(5.5*2.1)(5.5*2.5)(6.0*1.4)(6.3*3.0)