Com Voltage Select Jumpers; Com2 Voltage Select Jumper - VIA Technologies VB7009 User Manual

3.2. COM Voltage Select Jumpers

Each of the additional COM ports (available through the onboard COM pin headers, see page 25)
can support both +5V and +12V. COM2 has its own pin header block. COM3 and COM4 share a
single pin header block. COM5 and COM6 also share a single pin header block.

3.2.1. COM2 Voltage Select Jumper

The voltage for COM2 is controlled by the jumper labeled as "J12". The voltage can be either +5V
or +12V. +5V is the default setting. The jumper settings are shown below.
Figure 31 Figure Figure Figure 31: COM2 31 31 : COM2 : COM2 voltage select jumper : COM2 voltage select jumper voltage select jumper voltage select jumper
Table 28 Table Table Table 28 28 28: COM2 voltage select jumper settings : COM2 voltage select jumper settings : COM2 voltage select jumper settings : COM2 voltage select jumper settings
Setting Setting Setting Setting Pin 1 Pin 1 Pin 1 Pin 1 Pin 2 Pin 2 Pin 2 Pin 2
+5V (default) On On
+12V Off On
VB7009 VB7009 User Manual VB7009 VB7009
1
Pin 3 Pin 3 Pin 3 Pin 3
Off
On
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