Completely foreordained ...

... Despite some reviews, have pointed out, I tried my luck. Unfortunately in vain. My friend, who knew nothing about the intolerable buzzing / beeping of the device (ie was foreordained) has wondered why they suddenly had tinnitus. I've noticed when plugging in the appliance, there is this unpleasant noise, but hoped it would dissolve with increasing heating. Unfortunately this hope was unfounded, therefore the unit returned. Congratulations to all those who were lucky and got an intact device. Perhaps, I think it made in a few decades if my hearing then with age has been severe restrictions. Currently, it is not tolerable in the hallway to the bedroom.
Device functioned thanks WPS incidentally smoothly. More I can not say, because it was only one day in operation. Whether it no longer could move suddenly into the net after a few days, I do not know. The device has been operated together with an approximately 5-year-old Netgear router.