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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).
SMBus to PCI-E Slots
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enabled
Pins 2-3
Disabled
Manufacturing Mode Select
Close pins 2-3 of jumper JPME2 to bypass SPI flash security and force the system to operate
in the manufacturing mode, which will allow the user to flash the system firmware from a host
server for system setting modifications. Refer to the table below for jumper settings.
Manufacturing Mode
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal (Default)
Pins 2-3
Manufacturing Mode
VGA Enable/Disable
JPG1 allows you to enable or disable the VGA port using the onboard graphics controller.
The default setting is Enabled.
VGA Enable/Disable
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enabled (Default)
Pins 2-3
Disabled
I
2
C Bus for VRM
Jumper JVRM1 allows the BMC or the PCH to access CPU and memory VRM controllers.
Refer to the table below for jumper settings.
VRM
Jumper Settings
Jumper Setting
Definition
Pins 1-2
BMC (Default)
Pins 2-3
PCH
