Note: the white cable is positive electrode(+), the black cable is negative electrode(-). Do not reverse them! Non-professionals are not to be recommended to cut or pry up the shell of the old power adapter, because it is easy to break the power charger without exprience. Please connect lines directly from the location of fracture lines. Although it will not look so beautiful, it is simpler and more convenient. If you want it more beautiful, you can turn to the maintainance center for help! (Just for Repair)

Se även: https://www.ifixit.com/Guide/MacBook+Power+Cord+5-Pin+MagSafe+Connector+and+Cable+Replacement/21842

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