Does not fit into a removable drive slot

An SSD fits just perfectly into the adapter as a notebook HDD. The connectors are accurately fitting. The box is opened by sliding the lid, also here everything fits and nothing wobbles. The box is attached three kinds of screws to attach the hard disk to the adapter base and the mounting of the adapter in the PC case. At the bottom of the adapter is an aluminum plate, good for cooling the built-in SSD or HDD.
Who but a removable drive slot (quasi one disk drawer) which will determine that the adapter though fits, the cover of the AC drive bay but close only with ungutem pressure and no contact between an inserted disk and ports comes.