Unfortunately, the variation mode did not work. The fan strength was changed every 3 seconds (instead of every 90 seconds), and the maximum fan power has not been respected. This can then even nervous right :-)
The lower part was indeed with me, like another reviewer, at least punched wrong according to instruction, but that could be easily circumvented by the cable is threaded through the center of the device itself only to the other side. Still funny that which occurs more often.
But well, it was a used unit, albeit "as new" condition, only the owner has probably not reported the damage. Not even the scratches, which he has already cleansed ;-)