... Because, the slot-in housing not quite up to my expectations. While the Super-Drive was assembled quickly, however, the dimensional accuracy of the "slots" is not entirely satisfactory in the case. Again and again "terminals" in ejecting discs, must be helped along that manually. In the not very low price I would have liked a slightly better fit.
On the frame of the HDD or SSD, there is nothing to "complain". Fits super, quality okay. Overall: 4 stars scarce.