Keep your MacBook® Air charged and ready for use with this Apple® MagSafe 2 MD592LL/A power adapter that features a magnetic DC connector that easily disconnects to help protect your laptop and prevent the cable from fraying or weakening.
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I replaced the power cord for my daughter's MacBook Air and was shocked that it cost $80. Apple needs to find a way to either better manufactured the cord so it doesn't fray or sell a component part that is much less costly than buying the entire power cord.