@TP-Link_Deco Whilest all slave Decos are now connecting via Ethernet, one randomly disconnects/reconnects at times. may try a different patch cable at the switch, or a different port on the switch.

@TP-Link_Deco I may have this fixed. My Dell switch had Spanning Tree turned on globally. I disabled this function and now looks like both slave Decos are connected to Ethernet backhaul. Letting it...

@AnonyOne Thanks for the reply. I originally set these up to have signal source be Wifi. Thought I could get better performance using Ethernet backhaul. Tp-Link support has escalated the issue. We'll...

Current setup with Deco M5. Modem - Main Deco(router mode) - Switch - 2 slave Decos. Both Slave Decos have Ethernet hooked up, but only one will connect to Ethernet backhaul. The other one stays...