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Chapter 4: Motherboard Connections
SMBus to PCI-E Slots
Jumpers JI2C1 and JI2C2 allow you to connect the System Management Bus (I2C) to the
PCI-E slots. Both jumpers must be set to the same setting (JI2C1 controls the clock and
JI2C2 controls the data). The default setting is Disabled. Refer to the table below for more
information.
SMBus to PCI-E Slots
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enabled
Pins 2-3
Disabled (Default)
VGA Enable/Disable
JPG1 allows the user to enable the VGA connector. The default setting is Enabled. Refer to
the table below for more information.
VGA Enable/Disable
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enabled (Default)
Pins 2-3
Disabled
Watch Dog
JWD1 controls the Watch Dog function. Watch Dog is a monitor that can reboot the system
when a software application hangs. Jumping pins 1-2 will cause Watch Dog to reset the
system if an application hangs. Jumping pins 2-3 will generate a non-maskable interrupt
signal for the application that hangs. Watch Dog must also be enabled in BIOS. The default
setting is Reset.
Note:
When Watch Dog is enabled, users need to write their own application software
to disable it.
Watch Dog
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Reset (Default)
Pins 2-3
NMI
Open
Disabled