I would appreciate help clarifying my options.  I have read about "wired backhaul" with mesh networks like the Deco XE75 Pro, but I also read that wiring the satellite nodes provides full strength to their WiFi capabilities, rather than the drop-off that comes with more distant WiFi connections between nodes.  The latter suggests that wired nodes would (or "could") have both faster speeds and a more reliable data stream than just connecting the units by WiFi.  Does that sound right?

Also, am I able to go like this (with '___' for wired Ethernet and '===' for wireless)?

Modem ____ Deco main unit as router ====

                                                              \____ Deco unit ====

                                                               \                         \____ computer

                                                                \

                                                                 \___ Deco unit ====

But how about:

Modem ____ non-wireless router ____ switch ____ Deco unit as access point =====

                                                                          \                                                   \____ printer

                                                                           \

                                                                            \ ____ Deco unit ====

                                                                             \                          \____ computer

                                                                              \

                                                                               \____ Deco unit ====

That is, to use a Deco unit as a WiFi node, do I need to have a wireless router -- might as well use a Deco for that, with a switch to wire everything else to it -- or can I use a non-wireless router, wire Deco units to it, and they will form a wireless mesh network?

Thank you for your help!