MacBookPro12,1 Early 2015: MF839LL/A (2.7 GHz Core i5). MacBookPro12,1 Early 2015: MF841LL/A (2.9 GHz Core i5). MacBookPro12,1 Early 2015: MF843LL/A (3.1 GHz Core i7). 1 - CPU cooling fan. Compatibility -There are different versions of CPU cooling fan for different years and models, make sure buying a compatible model.
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