The drive sits well in the bay and is stabilized by side screws. A video with instructions about this specific model exists on youtube and is very accurate. The only disadvantage is that the 1TB HDD by WD, which is slightly higher than the norm, does not fit into it. I used the main disk slot of my macbook pro (2010) for the 1TB HDD and placed the SDD in the Bipra bay. Everything worked instantly without a problem.