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I bought my late 2015 27” imac without the fusion drive so I don’t have a data cable. Is the data cable listed on Ifixit for the late 2014-mid 2015 compatible? The one that connects power and data to the logic board. (A1419, EMC2834)

The cable you want is Apple P/N 923-00664 For reference here’s one 27” iMac Retina 5K Hard Drive Combo Cable (L15/17/19)