When connected to an iMac 27-inch Mid 2011 (i7, 16GB RAM) brings the adapter incl. Built-in Samsung 840 Pro 128GB SSD a super performance. According Blackmagic test about 350MB / s Write and up 397MB / s Read values. The IOPs are important actually. I can only say that the computer from the gray boot screen with the apple is booted in just 10 seconds and from there also full is operational. Reacts quickly to commands that one thinks the box knows in advance what I express or what program you start :-)
So it saves the consuming or expensive additional installation of the SSD. Would (of course without SSD) cost at the MAC Partner with us just 97.50 Euro incl. All parts. But what if you then have a warranty claim with the SSD? Can expand again and then clean again? Since the adapter + Thunderboltkabel expects again ...