Some high speed routers/modems (e.g. certain Salt Fiber Boxes) no longer support 10Mbit/s half duplex Ethernet speeds, which is the speed at which the tado° Internet Bridge works. For that reason, you may find the Internet Bridge doesn’t connect to your fiber router/modem anymore.
To fix this, you’ll need to buy a 100/10 Mbit/s network switch (e.g. Renkforce RF-4279924, TP-LINK TL-SF1005D, or NETGEAR GS105) online or in local hardware shops.
Once you have the switch, here’s how to install it:
Plug one end of one of the Ethernet cables into a port on your router/modem, then
plug the other end into any port on your switch.
Plug another Ethernet cable into another port on your switch, then
plug the other end into the Internet Bridge.