Alienware AW2725Q - HDMI (Earc;Arc) Port

20
About your monitor
HDMI (eARC/ARC) port
Figure 5. 19-pin HDMI (eARC/ARC) port
Table 15. Pin assignments - HDMI (eARC/ARC) port.
Pin number 19-pin side of the connected signal cable
1 TMDS DATA 2+
2 TMDS DATA 2 SHIELD
3 TMDS DATA 2-
4 TMDS DATA 1+
5 TMDS DATA 1 SHIELD
6 TMDS DATA 1-
7 TMDS DATA 0+
8 TMDS DATA 0 SHIELD
9 TMDS DATA 0-
10 TMDS CLOCK+
11 TMDS CLOCK SHIELD
12 TMDS CLOCK-
13 CEC
14 eARC TX+
15 DDC CLOCK (SCL)
16 DDC DATA (SDA)
17 DDC/CEC Ground
18 +5 V POWER
19 HOT PLUG DETECT (eARC TX-)