A DVD drive the unibody series If one chooses the silver casing with a height of 9.5 mm, so fits in there perfectly. In my case it was a MacBook Pro Early 2011 13 ", one should not forget, of course, cancel the two plastic tiller facing a pair of scissors is printed. What else can I say, it is well made, fits well and works great find only a housing generally should not be so expensive. Unfortunately, it is a Boot Camp partition only with Apple's own DVD drive with play on Windows and so I needed a case, since the originals Place an SSD had found her place. I got a star for the high price deducted, which I think is a plastic housing is unjustified. The floor is made of sheet metal with rubber pad, so that the drive does not slip or wobble.