Dell P2223HC 21.5" 16:9 IPS Monitor - Manual (Page 21)

About your monitor
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21
DisplayPort connector (out)
14 GND
15 AUX (p)
16 GND
17 AUX (n)
18 Hot Plug Detect
19 Re-PWR
20 +3.3 V DP_PWR
Pin
number
20-pin side of the
connected signal cable
1 ML0 (p)
2 GND
3 ML0 (n)
4 ML1 (p)
5 GND
6 ML1 (n)
7 ML2 (p)
8 GND
9 ML2 (n)
10 ML3 (p)
11 GND
12 ML3 (n)
13 CONFIG1
14 CONFIG2
15 AUX CH (p)
16 GND