SUPER MICRO Computer H8DMT user manual BMC/Video Enable/Disable, I2C to PCI-Express Slot

Chapter 2: Installation

BMC/Video Enable/Disable

JBMC1 connector allows you to enable or disable the IPMI and Video. The default position is on for both pin 1 and pin 2 to enable both IPMI and VGA. See the table below for jumper settings.

Jumper Setting	Definition
Pins 1-2	BMC and Video Enabled
Pins 2-3	BMC and Video Disabled

I2C to PCI-Express Slot

JI2C1/JI2C2 allows you to enable the I2C bus to communicate with the PCI-Express slot. For the jumpers to work properly, please set both jumpers to the same setting. If enabled, both jumpers must be enabled. If disabled, both jumpers must be disabled. See the table below for jumper settings.

Jumper Setting	Definition
Closed	Enabled
Open	Disabled

Watch Dog Enable/Disable

JWD enables the Watch Dog function, a system monitor that takes action when a software application freezes the system. Jumping pins 1-2 will have WD reboot the system if a program freezes. Jumping pins 2-3 will generate a non-maskable interrupt for the program that has frozen. Watch Dog must also be enabled in BIOS. See the table below for jumper settings.

NOTE: When Watch Dog is enabled, the user must write their own application software to disable the Watch Dog Timer.

Jumper Setting	Definition
Pins 1-2	Reset
Pins 2-3	NMI
Open	Disabled

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