@MikeJ01 

Hi, thanks for posting question on our community.

AXE5400 is not an exact model,so it is too hard to know what product it is, wireless router or Deco.

You may check the bottom label of the device, check the model and share here.

If you want a mesh system and you have three-floor house, I think Deco mesh system may be more suitable for you.

So if what you purchased is a wireless router and you choose Deco finally, you may consider to return the router asap, because they Onemesh, Easymesh, Deco mesh are three things. Please read this guide to know more about their differences.

BTW, if you want to ask more questions about Deco, it is suggested to share your posts in our Deco Section, there will be professional person to answer for you.