Acer XZ321QU User Manual - Page 15
Display Data Channel DDC
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English Display Data Channel (DDC) To make installation easier, so long as your system supports the DDC protocol, the monitor is able to plug-and-play. The DDC 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 the DDC2B standard. 20-pin color display signal cable PIN No. Description 1 ML_Lane 0+ 3 ML_Lane 05 GND 7 ML_Lane 2+ 9 ML_Lane 211 GND 13 KONFIG1 15 AUX CH+ 17 AUX CH19 Return PIN No. Description 2 GND 4 ML_Lane 1+ 6 ML_Lane 18 GND 10 ML_Lane 3+ 12 ML_Lane 314 CONFIG2 16 GND 18 Hot Plug 20 DP_PWR *19-pin Color Display Signal Cable PIN No. 7. 9. 18. 19. 5, 11, 17 Description MHL+ MHLVBUS CBUS GND * Only for MHL models