Question about TP-Link Deco E4 WLAN Mesh 3-pack Set (AC1200)

If the WLAN signals between a Deco unit are weak (a little too far away), you can create a backhaul by using LAN cables and then get a third transmission channel quasi cheaply. This can increase the WLAN performance of a Deco system massively, just test it, if possible I would do it that way.

Yes, you can :-)