urgently for improvement

The housing looks stable and high quality. There is no installation instructions or Bedienunsanleitung, only the guarantee statement.
The built-in hard disk is only on the board or SATA connection anesteckt and therefore lacks any fastenings for the hard drive.
As the hard drive in the enclosure is in direct contact with the body, you can hear the hard drive permanently as it is in operation, and that even though I use a very quiet hard drive. It definitely lacks rubber bumpers so that the vibration is not transmitted and the hard drive is screwed to the housing.
Even for me as a professional, it is first a Fummlerei until you reach the fact that the attached small plastic discs for lateral stabilization of the hard disk used and how you have to infect these. However, these plastic plates are made of hard plastic and are loose in the rail. Once you hold the hard drive cage in hand, slide back and forth these plates and are very disturbing.