@NefariousLegion Yes, you can. This is how I run my 3 nodes Deco mesh with 2.5Gbps ports and modem/router with single 2.5Gbps port. To avoid any issues, buy switch from TP-Link brand. Also, I would...

@LYO_Tomek Please share network diagram, what switches you use, Deco PoE firmware version(s), how long have you had these Deco, when did you upgrade firmware (if you did), was the issue present...

@Cornishman This seem to be the different issue from original you had. Next time it happens, power off Vimin switch that is connected to Main Deco and see if Main Deco will recover by itself,...

@FTTP Follow this link: https://www.tp-link.com/uk/support/download/deco-be65/ Choose the hardware version (V1 or V2) Click on Firmware button just below on that same page You'll see latest firmware...

@David-TP Hi, TP-Link Support (and everyone). I have an issue with new deployment of set of Deco X50-PoE V2 firmware 1.4.4. This is in place deployment, replacing M9 Plus and M5 on the same network...

@anurag24 It is possible your ISP Router does not support Deco Ethernet backhaul, it is also possible Ethernet cable you use has issues. Take Satellite Deco with its Ethernet cable connected to...