Level External Hard / External Hard

External Hard Drive is generally used to store important data.
It needs to be at a stable horizontal position in order to prevent a physical collision during the transferring of data.
If the physical collision occurs, the Drive begins to heavily vibrate which you can hear from and feel on it.
The physical collision might cause data error as well as phenomenon decrease in the life of the Drive.
Therefore, to prevent and solve these problems, the Level External Hard Drive is designed to inform
the Drive users of the possible risks and problems, and the solutions