Siemens SIMATIC NET IE FC RJ45 Compact Operating Instructions page 24

Assembly
9. Release the wires and pull them parallel. Make sure that the ends are not crushed.
Sometimes it is necessary to trim the ends.
10. Open the plug and insert the wires according to the color coding on the plug (see
frame) into the guides in the plug. Start with the side of the blue/white-blue and
brown/white-brown colors. The wires can be bent to secure them.
11. Pull the wires through the plug housing towards the front.
24
IE FC RJ45 Plug 4x2 CAT 6A
A5E34280610-AD, 01/2023