Hi Dan,
I have almost the same question as OP — except that my machine is a MBP (retina), late-2012, 13”.[br]
I recently bought the Samsung EVO 500GB 2.5” SATA III SSD from Amon on a black friday whim; but now am unsure if it will even fit in my MPB, or if I’ll need a special connector, or what have you. From what I gather, I think the late 2012 model is somewhat of a half-way house, or something? All the youtube videos that upgrade the late-2012’s 120GB SSD to a Samsung one doesn’t use the 2.5” SSD…
What do you think?