After watching the two exact adapter the first eyebrow raising - changed in one place is XAV5401, on the other XAVB5602, something with nano ... hmm, OK ... although is not the same, but will hopefully work ...
Read instructions for commissioning, twice - everything understandable and not rocket science.
Adapter plugged into the cans, started with the establishment of security, as described in the manual - here the second eyebrow raising - after 2-5 seconds of pressing two adapter both blink first for about 2 minutes a wolf, but do not recognize themselves ( the average lamp stays dark). So reset, try other outlets, always resist the same picture.
So look in the network configuration of Fritzboxoberfläche, at least the adapter to the router is out here, was thus recognized. The devices, which depend on the second adapter, can not an IP address - well no wonder that there is no communication between the two adapters ... everything tasted several times ... no success.
Next idea: Update drivers and firmware. Drivers are current and are supplied on a CD. Firmware pulled at Netgear, unpacked at installation time and again the message "there was no adapter found" ...
So slow is from the eyebrow raising a real nuisance and if I or the equipment tonight have no brainwave and takes the thing to run, everything will be packed and sent back ... shame about the wasted life with that thing ...
Oh yeah ... the house including lines is new, so ncihts with power lines from the 50s ...