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Knowledge document #139

FRITZ!Box 5590 Fiber

This support document is available for the following products:

Maximum cable lengths

The FRITZ!Box comes with various cables, for example to connect the FRITZ!Box to your line or a computer. 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 Fiber optic cable

The length of the cable in the home does not matter since the attenuation of the cables is comparatively low. The SFP modules included with the FRITZ!Box have LC/APC sockets, the cable included with delivery has LC/APC plugs. If the fiber optic socket does not have an LC/APC socket, corresponding adapters or cables with different plugs on both ends are available.

2 Telephone cable

Normally, the cable between a telephony device and an analog extension on the FRITZ!Box may be up to 100 meters long, but this depends on the telephony device used.

3 Network cable

The network cable between the FRITZ!Box and a connected device may be up to 100 meters long.

Note:Any standard network cable Cat 5e or better (STP, 1:1) can be used to connect devices to the FRITZ!Box.

4 USB cable

The cable of USB devices connected to the USB port on the FRITZ!Box should be a maximum of 5 meters long.