Model Number: A1502. 1 - Left speaker. 1 - Right speaker. MacBookPro11,1 Mid 2014: MGX72LL/A (2.6 Core i5). MacBookPro11,1 Mid 2014: MGX92LL/A (2.8 Core i5). MacBookPro11,1 Mid 2014: MGX92LL/A (3.0 Core i7).
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