Com Pin Headers; Front Audio Pin Header; Figure 22: Com Pin Headers Diagram; Figure 23: Front Audio Pin Header - VIA Technologies EPIA-M930 User Manual

2.2.9 COM Pin Headers

There are two COM pin headers on the VIA EPIA-M930. Each COM pin header supports the RS-232 standard.
The pin headers are labeled as "COMH1" (COM3) and "COMH2" (COM4). Both of the COM pin headers can
support +5V or +12V. The pinouts of the COM pin headers are shown below.
COMH1
COMH2

Figure 22: COM pin headers diagram

Pin Signal
1 COM_DCD
3 COM_TXD
5 GND
7 COM_RTS
9 COM_RI

Table 20: COM pin headers pinouts

2.2.10 Front Audio Pin Header

In addition to the TRS audio jacks on the external I/O coastline, the VIA EPIA-M930 has a pin header for Line-
out and Mic-in. The pin header is labeled as "F_AUDIO1". The pinouts of the front audio pin header are shown
below.
F_AUDIO1

Figure 23: Front audio pin header

1
1
COM3
Pin Signal
2 COM_RXD
4 COM_DTR
6 COM_DSR
8 COM_CTS
10 —
1
VIA EPIA-M930 User Manual
COM4
Pin Signal Pin
1 COM_DCD 2 COM_RXD
3 COM_TXD 4 COM_DTR
5 GND 6 COM_DSR
7 COM_RTS 8 COM_CTS
9 COM_RI 10 —
Signal
18