Dell E1909WDD Monitor - Manual (Page 7)

Pin Assignments
20-pin DisplayPort Connector
Pin
Number
20-pin Side of the Connected Signal Cable
1 ML Lane 3(n)
2 GND
3 ML Lane 3(p)
4 ML Lane 2(n)
5 GND
6 ML Lane 2(p)
7 ML Lane 1(n)
8 GND
9 ML Lane 1(p)
10 ML Lane 0(n)
11 GND
12 ML Lane 0(p)
13 GND
14 GND
15 AUX CH (p)
16 GND
17 AUX CH (n)
18 Hot Plug Detect
19 Return
20 DP PWR