Com3 And Com4 Voltage Select Jumper - VIA Technologies VB7009 User Manual

3.2.2. COM3 and COM4 Voltage Select Jumper

The voltage for COM3 and COM4 is controlled by the jumper labeled as "J13". Refer to Figure 32
for the location of the jumper.
The voltage can be either +5V or +12V. +5V is the default setting. The even pin numbers
correspond to COM3. The odd pin numbers correspond to COM4. The jumper settings are shown
below.
Figure 32 Figure Figure Figure 32: Voltage select jumpers for COM3 and COM4 32 32 : Voltage select jumpers for COM3 and COM4 : Voltage select jumpers for COM3 and COM4 : Voltage select jumpers for COM3 and COM4
Table Table 29 29: Jumper settings for COM3 and COM4 : Jumper settings for COM3 and COM4
Table Table 29 29 : Jumper settings for COM3 and COM4 : Jumper settings for COM3 and COM4
COM4 Setting COM4 Setting Pin 1 Pin 1 Pin 3 Pin 3
COM4 Setting COM4 Setting Pin 1 Pin 1 Pin 3 Pin 3
+5V (default) On On
+12V Off On
COM3 Setting COM3 Setting COM3 Setting COM3 Setting Pin 2 Pin 2 Pin 2 Pin 2 Pin 4 Pin 4 Pin 4 Pin 4
+5V (default) On On
+12V Off On
2
1
6
5
Pin 5 Pin 5
Pin 5 Pin 5
Off
On
Pin 6 Pin 6 Pin 6 Pin 6
Off
On
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