I've seen conflicting answers on upgrading the SSD on a MacBook Pro (Retina, 15-inch, Mid 2015). I currently have a 512GB SSD, but want to upgrade to a 1TB or 2TB if possible. The results from my Googling seem to indicate that it is possible, but only with specific types of SSD drives. I can't find any good resource indicating which SSD drives are compatible. Does anyone here have experience on which SSD drives would work for my situation? Thanks!