This thing I should have bought earlier! Have only ever had concerns but because of numerous critical reviews. But because the Wi-Fi reception was very tricky just in my living room I have risked. I have tested the repeater only in conjunction with a Fritz box (7270) and connected via WPS, and works right away and without any problems. The wireless internet service in my living room is now of "just so" to full power, and my devices (smartphones from Samsung and LG) have no problem to connect, there were also no reconfiguration required. So can, at least who intends the device along with a WPS-enabled FritzBox operate safely access I think I can about the interaction with routers from other manufacturers do not say anything.