VIA Technologies epia-m860, User Manual

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EPIA EPIA EPIA EPIA- -- -M860 M860 M860 M860 User Manual User Manual User Manual User Manual
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3.4.2. COM3 and COM4 Voltage Select Jumper
The voltage for COM3 and COM4 is controlled by the jumper labeled as “J7”.
Refer to Figure 31 for the location of the jumper.
The voltage can be 5V or +12V. +5V is the default setting. The odd
pin numbers correspond to COM3. The even pin numbers correspond to
COM4. The jumper settings are shown below.
COM3
COM3 COM3
COM3 Setting
Setting Setting
Setting Pin 1
Pin 1 Pin 1
Pin 1 Pin 3
Pin 3 Pin 3
Pin 3 Pin 5
Pin 5 Pin 5
Pin 5
+5V (default) On On Off
+12V Off On On
COM4 COM4 COM4 COM4 Setting Setting Setting Setting Pin 2 Pin 2 Pin 2 Pin 2 Pin 4 Pin 4 Pin 4 Pin 4 Pin 6 Pin 6 Pin 6 Pin 6
+5V (default) On On Off
+12V Off On On
Table Table Table Table 26 26 26 26: Jumper settings for COM3 and COM4 : Jumper settings for COM3 and COM4 : Jumper settings for COM3 and COM4 : Jumper settings for COM3 and COM4
3.4.3. COM5 and COM6 Voltage Select Jumper
The voltage for COM5 and COM6 is controlled by the jumper labeled as “J8”.
Refer to Figure 31 for the location of the jumper.
The voltage can be 5V or +12V. +5V is the default setting. The odd
pin numbers correspond to COM5. The even pin numbers correspond to
COM6. The jumper settings are shown below.
COM COM COM COM5 5 5 5 Setting Setting Setting Setting Pin 1 Pin 1 Pin 1 Pin 1 Pin 3 Pin 3 Pin 3 Pin 3 Pin 5 Pin 5 Pin 5 Pin 5
+5V (default) On On Off
+12V Off On On
COM COM COM COM6 6 6 6 Setting Setting Setting Setting Pin 2 Pin 2 Pin 2 Pin 2 Pin 4 Pin 4 Pin 4 Pin 4 Pin 6 Pin 6 Pin 6 Pin 6
+5V (default) On On Off
+12V Off On On
Table Table Table Table 27 27 27 27: Jumper settings for COM5 and COM6 : Jumper settings for COM5 and COM6 : Jumper settings for COM5 and COM6 : Jumper settings for COM5 and COM6
Note: Note: Note: Note:
If the mainboard is not equipped with COM5 and COM6, then the J8 jumper will not be on the
mainboard either.