Migrated SSD from other machine into Upper bay of "new" Apple refurb'd 2012 mini, everything seemed to go well, but the existing 1TB spinner in the Lower bay shows negotiated connection at 3Gb vs the 6Gb for the SSD.

Is this expected behavior?

I am confused about mixed experience with SSD in Upper bay vs Lower. Would be nice to have a more definitive answer.

I had the same problem and the issue is that ribbon cable gets squared off towards the bottom and has to be fed into the slot more carefully.

Great guide and great parts offering. Thing 4's ancient iPhone 4 is back in business until I hand him down my 5 when I get the next iPhone this fall.