VIA Technologies VB7008, User Manual

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3.2. COM2 Voltage Select Jumper
The additional COM port (available through the onboard COM2 pin header,
see page 25) can support both +5V and +12V. The COM2 voltage select pin
jumper is a selector to determine the input voltage of COM2 pin header
connector. The voltage can be 5V or +12V. +5V is the default setting.
The pin jumper is labeled as “J6”. The jumper settings are shown below.
1
Figure
Figure Figure
Figure 31
31 31
31: COM
: COM : COM
: COM2
2 2
2 voltage select jumper
voltage select jumper voltage select jumper
voltage select jumper
Setting
Setting Setting
Setting Pin 1
Pin 1 Pin 1
Pin 1 Pin 2
Pin 2 Pin 2
Pin 2 Pin 3
Pin 3 Pin 3
Pin 3
+5V On On Off
+12V Off On On
Table Table Table Table 27 27 27 27: COM : COM : COM : COM2 2 2 2 voltage s voltage s voltage s voltage select jumper settings elect jumper settings elect jumper settings elect jumper settings