Acer XF250Q User Manual page 16

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.
24-pin color display signal cable
PIN No. Description
1 TMDS data 2-
2 TMDS data 2+
3 TMDS data 2/4 shield
4 NC
5 NC
6 DDC clock
7 DDC data
8 NC
9 TMDS data 1-
10 TMDS data 1+
11 TMDS data 1/3 shield
12 NC
PIN No. Description
13 NC
14 +5 V power
GND (return for +5 V hsync.
15
vsync)
16 Hot-plug detection
17 TMDS data 0-
18 TMDS data 0+
19 TMDS data 0/5 shield
20 NC
21 NC
22 TMDS clock shield
23 TMDS clock+
24 DDC TMDS clock-
5