Dell P5524QT 55" UHD 4K Touchscreen Commercial Monitor - Manual (Page 24)

24 | About your display
RJ-45 connector
Pin number 12-pin side of the connected signal cable
1 D+
2 RCT
3 D-
4 D+
5 RCT
6 D-
7 GND
8 GND
9 LED2_Y+
10 LED2_Y-
11 LED2_G+
12 LED2_G-