@DrAhmed86 Are you sure your device is connected on 5GHz? Deco mesh has that feature, when dual-band is enabled, to push idle device to 2.4GHz. Disable 2.4GHz for Main Network in Deco app and try...

@PWH By default, Satellite Deco will try connecting to Main Deco, even if signal is weak. Many new Deco models have configuration settings that allow to overwrite it and daisy chain, but some do not....

@DeclanMC When Satellite Deco M5 loses Ethernet backhaul, even briefly, it will switch to WiFi backhaul. During the switch Satellite Deco will not have connection to Deco mesh. Satellite Deco will...

@richpig It is my understanding that Deco P9 does not support Connection Preference feature. By TP-Link design, all Deco units in Deco mesh must support Connection Preference feature for it to work....

@Carl999 You can't do that with Deco mesh, but there is a solution. Look for dual-WAN router. It does not need to be WiFi capable. Place it in front of Deco mesh, connecting router to both internet...

@GyanAccessFreak I would suggest adding Satellite Deco wirelessly first. Bring Satellite Deco to where Main Deco is, add Satellite to Deco mesh if it does not join automatically. Give Satellite Deco...