The first tp link has connected some devices that all work and have v3 Model number: TL-SG108. From this it is also connected swich nr.2 which also has V3 model TL-SG105 that stops the internet....

Model : Hardware Version : Firmware Version : ISP : Hi Has set up the Deco M5 connected to the internet home center. Set up a swich that is connected to the first box. In the attic I have several...