Siemens SCALANCE X-400 Operating Instructions Manual page 107

Figure 5-7
The maximum segment length of 100 m also applies when using the FastConnect cabling
with TP cord. Normally, FastConnect cable with a length of 90 m is used. The remaining 10
m is then available for TP cord at both ends (total of 10 m).
Figure 5-8
SCALANCE X-400
Operating Instructions, 06/2015, C79000-G8976-C186-12
IE FC RJ-45 modular outlet insert 2FE
FastConnect cabling
A1 TP cord 4x2
A2 TP cord 4x2
B IE FC standard cable 4x2
Connecting
5.2 Ports
107