Compatible with any connection You can use your FRITZ!Box with any IP-based DSL connection (ADSL2+ and VDSL including supervectoring). Alternatively, you can run it behind a fiber optic or cable modem and simply integrate it into an existing Wi-Fi network. It can also be operated with a 4G/3G dongle. High speed with VDSL supervectoring With FRITZ!Box you are well prepared for future developments:...
> https://en.fritz.com/products/fritzbox/fritzbox-7690/details/
High speed at cable connections This FRITZ!Box has been designed especially for cable connections. Thanks to its integrated cable modem in accordance with the latest DOCSIS 3.1 transmission standard, this FRITZ!Box allows you to surf the web easily and safely with gigabit data rates of several Gbit/s. Ultimate high speed with 2.5 G.bit/s LAN A special feature is the 2.5 Gigabit LAN connection,...
> https://en.fritz.com/products/fritzbox/fritzbox-6670-cable/details/
The FRITZ!Box 4060 is a fast tri-band wireless router with Wi-Fi 6 that ensures top speeds in your Wi-Fi network. A fully-fledged telephone system with a DECT base station and Smart Home control complete the range of features.
> https://en.fritz.com/products/fritzbox/fritzbox-4060/