I bought the wifi devolo dlan 500 starter kit (with 2 doses), after all connected very simply (more thanks to user feedback, that record somewhat confused because very detailed) everything works perfectly .. .... and by mistake I unplug the "duo" tap (front button connected to the box) and I realize that taking dlan 500 wifi connected later in the home continues to work perfectly. the explanation is (unless I am mistaken) that I have a Freebox Revolution in 2 parts already interconnected by wireless and CPL (Via Freeplugs) and the wifi already circulating in the power grid of the house one take devolo dlan enough to recover 500 wifi wifi anywhere in the house. Now what is the starting installation can be done only with a socket 500 dlan wifi and without taking starter "duet" I do not know. because if this is the case it is 56 instead of 80 at Amazon .... Question to 'specialists' and users a Freebox Revolution !!