During installation please make sure the polarity of wires is correct. Any question or confusion please contact us direct at any time or day include weekends and we will be happy to help you immediately. More quantity is available so please ask for best price for bulk quantity. Thank you Important: Do not get confused with Mafsafe2 models. This will only fit the models before Jun 2012. If not sure please send us your MacBook laptop model number printer at the bottom of your laptop.
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