@k3nwong24 

Unfortunately, I need to inform you that neither the HB810 nor the Archer BE450 can form a unified mesh network with your Deco M4 units.

While TP-Link's Deco and Archer Router products both support mesh functionality individually, they are not designed to work together to form a single mesh network. These product lines, although under the same brand (TP-Link), differ in their technology and software, preventing them from interoperating in a unified mesh network.

You may still be able to use an Archer router together with your Deco system on the same network, but they won't be able to form a single, unified mesh network. In other words, there won't be any seamless roaming between the Archer Router and the Deco system.

My suggestion:
If your goal is to create a complete mesh network for your whole house, I would recommend:
• Continue using your existing Deco M4 units and add more Deco units if needed for better coverage (all Deco models are compatible with each other and can form a mesh network)
• Use either the HB810 or Archer BE450 simply as your main router/modem, and keep your Deco M4 units as the mesh system

For more details about mesh compatibility, please refer to: https://www.tp-link.com/support/faq/3749/

Hi, 

@HelpFixDecoApp thank you for your explanation.
 

@k3nwong24 The HB810 also cannot form a single mesh network with the Deco M4. If you wish to replace your main Deco M4 with a new router while maintaining a mesh network configuration, we recommend selecting a model from the Deco product series(https://www.tp-link.com/home-networking/deco/).

Best Regards