Com Pin Headers - VIA Technologies VB7009 User Manual

2.2.9. COM Pin Headers

There are COM pin headers on the mainboard in addition to the COM port 1 on the external I/O.
Each COM pin header supports the RS-232 standard. The COM pin headers labeled as "COM2,
COM3 and COM4" are available in VB7009-16 and VB7009-10E SKUs, while the additional "COM5"
and "COM6" pin headers are offered only by VB7009-12XC & VB7009-12QCE SKU. All the COM
pin headers can support +5V or +12V. See page 36 for details on setting the voltage. The pinout of
the COM pin headers are shown below.
Figure 21 Figure 21: COM pin header : COM pin header
Figure Figure 21 21 : COM pin header : COM pin header
Table Table Table 17 Table 17 17 17: COM pin header pinout : COM pin header pinout : COM pin header pinout : COM pin header pinout
Pin Signal Pin
1 COM_DCD 2
3 COM_TXD 4
5 GND 6
7 COM_RTS 8
9 COM_RI 10
Signal
COM_RXD
COM_DTR
COM_DSR
COM_CTS
Key
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