How to set "Energy Saver"- Setting for Power Adapter or Battery?

Under the System preference, how do I need to set the Energy Saver? There are options of Power Adapter or Battery for the Setting for. What is difference?

Here's how I have my energy saver settings set, first, click 'show details':
Power adaptor (when plugged into a power outlet):
Under Sleep: Put the computer to sleep: never (I close the display when I want to put it to sleep)
Put display to sleep: 5 minutes
Put the hard disk to sleep whenever possible is checked.
Under options, reduce brightness before sleep and show battery status on menu bar are checked.
Processor Performance: Automatic
Battery (when disconnected from a power outlet)
Under Sleep: Put the computer to sleep: never (I close the display when I want to put it to sleep)
Put display to sleep: 3 minutes
Put the hard disk to sleep whenever possible is checked.
Under options, reduce brightness of this display when using this power source, reduce the brightness before sleep, and show battery status on menu bar are checked.
Processor Performance: Reduced

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Take all the steps suggested in this support article. That's the starting point for any further effort to solve the problem. Skipping any of those steps may mean that the problem won't be solved. Note that, as stated in the article, the computer will not sleep if Internet Sharing is enabled.
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This question was solved.
View Solution.

The pin in picture looks liek a 5mm pin and one one on docking station is a smart pin. So you would need something like the one in picture in this link.
In the picture observe the component in left hand bottom corner.
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I would say, take the adaptor to store and get one.
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--Please mark the post that solves your problem as "Accepted Solution"

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How to set "Energy Saver"- Setting for Power Adapter or Battery?

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