I used this empty box to put a super drive (slot-in) of a portable Samsung NP700 ****, so this case is not limited to MacBook ... and instead a caddy in the pc 9.5 mm to turn the original PC hard disk in and to the original location in the PC 250 GB Samsung SSD 840 PRO. Super changing speed 550 MB / s. Just a pity that this case is not yet in USB 3.0, but hey, I do not know if it's useful ... to read or install exceptionally DVD media.
Assembly is easy knowing that they must ensure cut the 2 plastic pins before placing the disc in the case of the optical end of 9.5 mm thickness player.