@MorganC While all Deco models should be compatible with each other, for Deco mesh with X90s I would suggest to add new units from X-series. These are your options: X10, X20, X50, X50-PoE, X55, X60....

@Choggins If all you need from Deco mesh is WiFi coverage, I would recommend to keep Hub in router mode and switch Deco mesh to AP mode. This is how I run Deco mesh at my house with my ISP cable...

@Jonathan85 Try powerline first. I would suggest the following approach: 1. Test to see if powerline link is stable and reasonably fast; 2. Use one of Deco M4 units you already have to see if setup...

@Sybren This may happen when you have mix of Deco units in your Deco mesh: some supporting Connection Preference feature and some not. For this feature to work, all Deco units must support it. If you...

@Panos13 Out of these two options I would prefer Alternative #2. Even if Deco mesh goes down, your wired equipment will keep working. Also, if you need to replace Deco mesh by some other brand of...

@pajtaz Ignore these and other errors messages in logs. If you want to see printer in Deco app, you will need to make changes in how it runs with static IP. Configure printer with dynamic IP settings...