@newmoro This situation usually means networking switch does not support Deco Ethernet backhaul protocol. Check the following TP-Link FAQ document, it may provide more information on that topic:...

@IsTwM Deco X55 comes with three gigabit Ethernet ports. Your PC can not connect to X55 by Ethernet cable with speeds faster than gigabit. If your X55 set is still in Amazon return window, I suggest...

@knyttl There are no settings to stop two units (Main and Satellite) connected to each other with Ethernet cable from using that Ethernet cable. Satellite Deco will immediately start using Ethernet...

@michaelmit Also, check if you perhaps accidentally blacklisted your computer in Deco app. See How to block a device or remove a device from the Deny List If Deny List (Block List) is not empty,...

@knyttl There are two possibilities: 1. From the photo, I can tell that switch you are using is from D-Link. This brand of switch is known to have issues with Deco Ethernet backhaul. If you have...

@yxedeco My primary Deco is connected through the switch. It can be done. In Access Point mode, you do not need to make configuration changes on Rogers Xfinity Gateway. The only recommended change is...