ARK-1123 User Manual 14
2.3.6 COM Connector
ARK-1123H provides one D-sub 9-pin connector, which offers RS-232/422/485
(BIOS Selectable) serial communication interface.
Figure 2.12 COM Port Connector
2.3.7 HDMI Connector
ARK-1123H provided two HDMI connectors. The HDMI link supports resolutions up
to 1920 x 1080 @ 60 Hz.
Figure 2.13 HDMI Connector
Table 2.6: COM Connector Pin Assignments
RS-232 RS-422 RS-485
Pin Signal Name Signal Name Signal Name
1 DCD Tx- DATA-
2 RxD Tx+ DATA+
3 TxD Rx+ NC
4 DTR Rx- NC
5 GND GND GND
6 DSR NC NC
7 RTS NC NC
8 CTS NC NC
9 RI NC NC
Note! NC means “No Connection”.
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