@Rob29out 

Hi, welcome to our community.

Whether router or AP mode, I am afraid that Archer AX10 will not set up one mesh network with your current main router ZTE 670, but it can extend the wireless coverage.

Thank you and best regards.

  @Rob29out use original  dlink cat6 cable atleast

Rob29out wrote

My apartment has fiber cables in all rooms. The internet is received in the main room  on a wifi router zte 670. How can I extend the internet in all rooms which will be connected to workstations using the fibre optic cables within the walls to enable 5ghz everywhere. I have archer ax10 as additional router. I am trying to avoid a mesh network on additional wifi devices.