@Kuokhong Please also review the following forum topic to see if it applies to your situation: https://community.tp-link.com/en/home/forum/topic/655034

@Sterryr29 When Deco can use Ethernet for backhaul, it will report Ethernet connection in Deco app, here is an example: This is suggested reading: General questions about Ethernet Backhaul feature on...

@dbjunction Force Samsung Tab S10 Ultra tablet to run on 5GHz network. You should be able to do that in Deco app settings, see How to select a preferred signal source on the Deco App Follow Part 2 of...

@DavidAA If your HP printer has Ethernet port, try connecting it to Main or to Satellite Deco with Ethernet cable.

@dpant It is because Deco behaves as a router, with its own IP address range. Configure Deco to run in Access Point mode and it will provide IP addresses from ISP modem/router range. See Switching a...

@Benji409 I see. Unfortunately, I can't help with that, maybe someone else will have other ideas. Connecting PC with Ethernet cable to Main or Satellite Deco usually helps. Also, if user has PC...