User`s manual
VB8001 User’s Manual
17
1717
17
Jumpers
JumpersJumpers
Jumpers
The mainboard provides jumpers for setting some mainboard functions.
This section will explain how to change the settings of the mainboard
functions using the jumpers.
Clear CMOS Connector: CLEAR_CMOS1
The onboard CMOS RAM stores system configuration data and has an
onboard battery power supply. To reset the CMOS settings, set the
jumper on pins 1 and 2 while the system is off. Return the jumper to
pins 2 and 3 afterwards. Setting the jumper while the system is on will
damage the mainboard.
Setting
SettingSetting
Setting
1
11
1
2
22
2
3
33
3
Normal Operation ON ON OFF
Clear CMOS setting OFF ON ON
Caution
CautionCaution
Caution:
::
:
Except when clearing the RTC RAM, never remove the cap on
CLEAR_CMOS jumper default position. Removing the cap will cause
system boot failure. Avoid clearing the CMOS while the system is on;
it will damage the mainboard.
Voltage Selector for COM Connectors: JCOMV2
This VCC selector is to determine the input voltage of each COM
connector.
Setting
SettingSetting
Setting
1
11
1
2
22
2
3
33
3
+5V ON ON OFF
+12V OFF ON ON
Normal
NormalNormal
Normal
Clear
ClearClear
Clear
+5V
+5V+5V
+5V
+12V
+12V+12V
+12V