FRITZ!Box 6840 LTE Service - Knowledge Base
Maximum cable lengths
You can connect various devices (for example printers, computers) to your FRITZ!Box. If a cable is too short, you can extend or replace it. Since you can only extend cables to a certain limit, below you will find information on the maximum possible length for each type of cable.
1 Telephone cable
The cable between a telephony device and an analog extension on the FRITZ!Box may normally be up to 100 meters long, but it depends on the telephony device used.
2 Network cable
The network cable between the FRITZ!Box and a computer or hub/switch may be up to 100 meters in length.
3 USB cable
The cable of USB devices connected to the USB port on the FRITZ!Box should not exceed 5 meters.