In all cases a bad controller appears to be installed, which does not manage the standby of the disc properly. If the plate after a few minutes goes into standby, the drive is running without plugging and unplugging not play automatically when you want to access it using a file manager. Since I in all three cases (the last, incidentally, was the latest version), the problem had, I assume that not anticipate that I have caught three mounting models. A problem with my hardware I can rule just because I have not only a computer and also not only a hard drive.
What did then finally to tilt my opinion about the case was the fact that another case of another manufacturer works brilliantly, incl. Standby and the USB port sits there and bomb-proof and does not wobble as with the Inateck housing.
I have now anyway a housing found, which is not expensive and finally works reliably.
Edit: For the super customer by the seller, who was actually trying to clarify my concern, and offered me an alternative, there is definitely a star more, oh come, because today is Wednesday and two. ^^