I have a custom adapter with 2 outputs that are the same in each output. Based on the below specs what are the outputs of each of the cables coming from my adapter?

  • Input: 100-120V~3A
  • Output:12V-12.5A
  • Positive polarity

And I know the output in each is 75w. So what is it?

  • 6V and 12.5A


  • 12v and 6.25A

Oh and this powers an external Graphics card for a laptop. One plug is for the Graphics card the other is for the housing device. I already tried looking up the input specs for the card with no luck.

  • 2
    \$\begingroup\$ If its not labeled, break out a multimeter. \$\endgroup\$ – MDMarra Feb 20 '12 at 1:24
  • \$\begingroup\$ So measure them, obviously. \$\endgroup\$ – Olin Lathrop Feb 20 '12 at 13:08

Most likely, the two outputs are both +12V, and the total available current from both outputs is 12.5A. We really can't be 100% sure though.


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