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I here to ask if exist a part for mac that i link now Energy link in mac Ty ^^

It’s called the DC IN port. For the correct one for your machine, please look on the back and give us the model number it will look like Axxx. Thanks or go here: http://www.ifixit.com/Info/ID-your-Mac/4

You can find the part you are looking for over here: MacBook MagSafe DC-In Board Regards, deSteini