Pros: Easy - plug in, access via LAN, PW Router enter, and voila you have the repeater configured the Access Poing is similarly easy, so for jmd who wants nothing more than an extension of the home net width has probably with the device all it takes.
Cons: If you want something more is not possible. I can the WLAN network of the router do not hide, otherwise the repeater is no longer, I can not place their own PW on the repeater (which I give other known example could), the establishment of a free wireless area which on the router settings from the remaining main power would separately: Not possible. I can not configure MAC address Übrnahme, so I get logged eg with a smartphone via the repeater, and a little later, because I change the rooms, through the router, bleats the Fritz box I wanted to bypass the child lock and locks me completely.