@NBW877 Now that everything is in order, you can bounce devices in garage (restart or turn their WiFi off/on) and see if some of them will just connect to Garage Deco. For those that won't, wait for...

@NBW877 >Also, it appears the clients in the garage (garage doors, lights) are still connecting to the kitchen Deco rather then the garage Deco. Devices that run on 2.4GHz only, such as older...

@NBW877 Blue ziggy line means Ethernet connection. Have you by any chance connected new Deco M9 with Ethernet cable to your home network? If not, the culprit could be really old firmware version on...

@Suziebum There is one more thing: Deco does not play well with devices that have static IP address configured on them. If you plan to keep Deco mesh, consider changing that to IP addresses reserved...

@Suziebum This question was asked before. See the following forum topic: https://community.tp-link.com/en/home/forum/topic/503114

@my2108 Yes, you can. Connecting switch to Deco Ethernet port should work just fine.