The AVM FRITZ!Box 5530 Fiber XGS-PON is a router specifically designed for use with fibre optic internet connections.
The AVM FRITZ!Box 5530, on the other hand, is a more universal router that can be used with a variety of internet connections, including fibre, DSL and cable.
In summary, the main difference between these two routers is the type of internet connection they are designed for and the data transfer capabilities they offer.
The AVM FRITZ!Box 5530 Fiber XGS-PON is optimised for use with fibre connections and offers high-speed data transfer, while the AVM FRITZ!Box 5530 is more flexible and can be used with a wider range of internet connections.
The XGS-PON module would be included.