The Raspberry Pi is working properly. The recommended for Raspi PSU also works properly, the plugging in various international standard sockets I find not so well resolved, because the plug is not optimal on the power supply is tight, the whole thing is a bit shaky. The housing is for my taste also not optimal closed. It can be opened to light again what can happen if you just raise the Raspi. The wireless adapter also may not work well quickly. (Have with second Raspi replaced the wireless adapter and suddenly he had the problems described below). When accessing with VNC to Raspi, you realize nothing, everything is going great. However, if you are accessing the Putty console on the Raspi, it sometimes takes up to 10 to 15 seconds until the Raspi responds to inputs. As if the wireless adapter in sleep mode. During the input of commands it hakelt. The problem is as I said, definitely on the wireless adapter.
Conclusion: The bottom line is all works, but I will next time again (as in the first Raspi) Search the accessories separately together.
