Acer P224W - Manual (Page 17)

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Connecting the docking device
(for selected models)
Locate the docking device connector on the rear panel and connect it to the
dock.
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.
Connector pin assignment
15-pin color display signal cable
PIN No. Description PIN No. Description
1 Red 9 +5 V
2 Green 10 Logic ground
3 Blue 11 Monitor ground
4 Monitor ground 12 DDC-serial data
5 DDC-return 13 H-sync
6 R-ground 14 V-sync
7 G-ground 15 DDC-serial clock
8 B-ground
1 5
6 10
11 15