Acer Nitro EI322QK Abmiiiphx 31.5" 4K HDR Curved Gaming Monitor - Manual (Page 17)

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Display Data Channel (DDC)
To make your installation easier, the monitor is able to Plug and Play with your system if your
system also supports DDC protocol. The DDC (Display Data Channel) is a communication
protocol through which the monitor automatically informs the host system about its
capabilities, for example, supported resolutions and corresponding timing. The monitor
supports DDC2B standard.
20-Pin Color Display Signal Cable
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DP_3.3V 2 GND
3 HPD 4 AUX_CH_N
5 GND 6 AUX_CH_P
7 GND 8 GND
9 ML_LANE0_P 10 GND
11 ML_LANE0-N 12 ML_LANE1-P
13 GND 14 ML_LANE1-N
15 ML_LANE2-P 16 GND
17 ML_LANE2-N 18 ML_LANE3-P
19 GND 20 ML_LANE3-N