@David-TP It's the first one: ISP modem---main Deco XE75 Pro(top-1)--- Netgear switch. I have other Deco units that connect either via the Netgear switch or through Wi-Fi. But connecting the switch...

After working without issue for some time, my Deco system now shuts down completely (red light, no internet) when the topmost Ethernet port is connected to my Ethernet switch. The switch is a Netgear...

@SHN Thanks for the quick reply. Crazy to see the number of people with this issue and that it wasn't immediately revolved by TP-Link. Guess I'll move on -- hope you're able to get something that...

I am experiencing this issue as well. I just bought a set of Deco XE-75 Pro routers (and an X50-PoE for one area that has ceiling ethernet only) as what I hoped would be an upgrade of my old Eeros....