My question is the following: with the Samsung SSD's there is an option of choosing the laptop upgrading kit with the SSD. What is that, and does it make sense to buy it. I should add: I already have an SSD in my MBP (early 2011 15") but want one in my Optibay... Another question that came to my mind: Does it make sense to put the SSD I have from Apple in the Optibay (128gb) and put the new one (256gb- either Samsung or Crucial m4) where the original was or not? - speed wise I mean. Thanks so much for your answers!