i just upgraded the SSD in my late 2013 MBP replacing the 512GB SSUAX with a 1TB SSUBX. I was going to sell the SSUAX to defray the cost of the new drive but then it occurred to me that I might be able to use it in my 2008 Mac Pro 3,1 with a suitable adapter. I see various for sale so not sure which to get. I would like to be able to boot from it & use as system disk