Universal Auto and Airplane Adapter for Laptop      

.With 8 connects(6.0*1.0,6.3*3.0,5.5*2.5,5.5*2.1,5.5*1.
7,4.8*1.7,4.0*1.7,3.5*1.35)
USER MANUAL
Model               SCDC-8040
Input voltage range  : DC12V
Input power        : 100W(max)
Input current       :10A(max)
Output voltage      : DC12V/15V/16V18V/19V/20V/24V
Output power       : 80W(max)
Output current      :4A(max)
Efficiency          :88%(Type)
This model is an universal auto and airplane adapter, use for
laptop, switching-mode DC to DC power supply, operation at input
DC12V, output dc12V/15V16/18/19/20V/24V, output current 4 Amp max,
with many protection functions , such as output over voltage
protection, output Short Circuit protection.
1.Please select output voltage of the dc adapter to suit your laptop
first , output voltage 12V/15V16/18/19/20V/24V marked on the adapter body
under the 4 bands switch, select output voltage convert by 4 bands switch.
2.Select a dc connector plug to suit your dc connector Jack of laptop
from 8 pcs dc connecter of accessory, please make sure that  the dc
connector  plug connect the adapter wire with correct polarity, correct
positive connect marked on the adapter body.
3.Insert dc input plug into the dc mains supply of dc11V to 13V.
4.Your adapter now should be working and the power indication
 led of adapter will be light.
CAUTION:
For DC 12V car or airplane use.
Don’t change the output voltage when the adapter is working!