EPIA
EPIA
EPIA
EPIA-
--
-M860
M860
M860
M860 User Manual
User Manual
User Manual
User Manual
33
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.
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