Com Ports; Figure 07: Com Port Diagram; Table 03: Hdmi® Port Pinouts; Table 04: Com Port Pinouts - VIA Technologies EPIA-M930 User Manual

Table 03: HDMI® port pinouts

2.1.2 COM Ports

The two integrated 9-pin COM ports use a male DE-9 connector. The COM ports support the RS-232 standard.
The pinouts of the COM port are shown below.

Figure 07: COM port diagram

COM1 (Top Port)
Pin Signal
1 DCD
2 RxD
3 TxD
4 DTR
5 GND

Table 04: COM port pinouts

Pin Signal Pin
1 TX2+
3 TX2-
5 GND
7 TX0+
9 TX0- 10 TXC+
11 GND 12 TXC-
13 key 14 key
15 DDCSCL 16 DDCSDA
17 GND 18 +5V
19 Hot Plug Detect
Pin Signal
6 DSR
7 RTS
8 CTS
9 RI
VIA EPIA-M930 User Manual
Signal
2 GND
4 TX1+
6 TX1-
8 GND
COM2 (Bottom Port)
Pin Signal Pin
1 DCD 6
2 RxD 7
3 TxD 8
4 DTR 9
5 GND
Signal
DSR
RTS
CTS
RI
8