Dell P2723DE 27" 1440p USB Type-C Hub Monitor - Manual (Page 29)

About your monitor │ 29
RJ45 port (connector side)
Pin
number
Signal
1 CT
2 TD1+
3 TD1-
4 TD2+
5 TD2-
6 TD3+
7 TD3-
8 TD4+
9 TD4-
10 GND
11 GREEN
12 GREEN
13 GREEN_AMBER
14 GREEN_AMBER