Question about AVM FRITZ!Box 4040 International

The difference lies in the designation "International" and the price.
In the past, the "International" designation had the advantage with ADSL connections that the configuration of Annex A and B was adapted for Switzerland and commissioning was therefore easier. But this is hardly relevant today.
The fact is that this Fritzbox does not have an ADSL modem built in. The "International" is therefore completely irrelevant.
In addition, the German, not "International" Fritz Boxes receive updates faster and more frequently, which is why I have ordered Fritzboxes directly from Germany in the past.
So I advise you to buy the cheaper version of this Fritzbox without the "International".