Top positive review
Works with existing WiFI modem-router
Reviewed in Australia on 4 May 2020
The plug and play setup was simple and I was up and running very quickly. Plug the main Deco into your existing modem and then follow the prompts (4 or 5 steps), then plug in the other Deco's around the house and press the "Add" button. Simple as that I was up and running. However there were intermittent device connectivity issues which I had to resolve outside of the wizard. I'm not sure if I missed an instruction in the wizard but it set the main Deco up as if I was connecting it to a modem rather than a WiFi modem-router. This meant that both the Deco unit and my original WiFI modem-router were both acting as WiFi Routers i.e. two WiFi networks and two routers. Apparently this causes IP conflict and device connectivity issues (double NAT, when you connect your router behind another router creating two different private networks).
TP-Link Q/A suggests running your existing modem-router in bridge mode. I didn't know what that meant or what the implications were. In the end, essentially I did two things:
a) turned off WiFi on my old modem-router and
b) set the Deco "Operating Mode" to "Access Point" instead of "Router (default)".
Hence now I have one WiFi network (broadcast from the Deco) and one Router (my old WiFi modem-router) and there are no weird IP conflict or device connectivity issues. The Deco only as one ethernet port, whereas my old router has four, which I can plug non-WiFi devices into so they have access to the internet and they are accessible on my home network, hence why I wanted to keep it operating as the router.