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Will a Samsung 850 EVO 1TB 2.5" SATA III Internal SSD (MZ-75E1T0B/AM) drive work in the FF839LL/A MacBook (early 2015 13.3" retina display)? I already have the drive and am thinking of buying this computer which comes with 128 GB drive. thanx

This series of MacBook Pro’s use a custom blade drive similar to a M.2 drive. It will not support a 2.5" SATA drive. Sorry ;-{ For reference you can see it here: MacBook Pro 13" Retina Display Early 2015 SSD Replacement You could still upgrade the SSD if you want to. Here’s one option: OWC - MacBook Pro with Retina Display 13" & 15" Late 2013, 2014, and 2015