This model is universal car laptop adapter 90w,

modle:EWDD9040it is an univarsal switching-mode powar supply for Laptap,  for almost brands of laptops, with USB port,

oparation at input DC12V,        output DC 15,16,18,19,20,22,24V

current 4.0A/4.5A                      max output power:90W max,          USB port:5V/1000mA

charge dtgital equipment such as :MOBIL, MP3,MP4With many protaction functiona,power by 12V car.

Rated Input Voltage: DC12V                     Input Rated Current:10 A 

Input Min,Current:100mA                          Input Power:120WATT
Effciency: >80%(TYP) 

Output voltage 15,16,18,19,20,22,24V(+/-0.9V NO LOAD )
USB Output current :1000Mamp(max)                  Output Power 90WMax  Output shorted circuit  pretection: Yes
Output over voltage protection:Yes 

Rippie Naise: 500mV    Line Regulation:5%          Lead Regulation:5%