Speaker Left/Right Apple MacBook Pro A1398 15.4" 2012 / 2013 076-1401 609-0335-A 609-0336-A. Apple MacBook Pro A1398 15.4" 2.3GHz Core i7 Mid 2012 MC975LL/A. Apple MacBook Pro A1398 15.4" 2.6GHz Core i7 Mid 2012 MC976LL/A.
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