How to integrate Huawei Wi-Fi Ax3 into the mesh?

I want to buy a Huawei Wi-Fi Ax3 and run it as a repeater in my mesh network. The Fritz! Box 7530 ax the master and another 7530 (without ax) already in use as a repeater.

My question now is whether I just have to connect the Huawei device to the power supply, just like the 7530, to integrate it into the mesh, or does a DSL cable also have to be plugged into the Huawei?

You don't need a LAN cable as a repeater.

Yes, in access point mode.

So no

Mesh is not necessarily = mesh. The mesh systems from different manufacturers are not necessarily compatible! So be careful before you spend any money. Better to stay with the FRITZ! En.