Jumpers - Supermicro SuperBlade SBA-4114S-C2N User Manual

3.2 Jumpers

To modify the operation of the motherboard, jumpers are used to choose between optional
settings. Jumpers create shorts between two pins to change the function associated with it.
Pin 1 is identified with a square solder pad on the printed circuit board. See the motherboard
layout page for jumper locations.
Note: On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates
the jumper is either on only one pin or has been completely removed.
Watch Dog (JWD1)
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, the user must write their own application software to
disable it.
Debug Mode Enable/Disable (JDBG1)
Jumper JDBG1 will enable or disable Debug Mode on the motherboard. The default setting
is Normal Mode.
VGA Enable/Disable (JPG1)
JPG1 allows you to enable or disable the VGA port. The default position is Enabled.
Watch Dog
Jumper Settings
Jumper Setting Definition
Pins 1-2 Reset (Default)
Pins 2-3 NMI
Open Disabled
Debug Mode Enable/Disable
Jumper Settings (JDBG1)
Jumper Setting Definition
Pins 1-2 Normal Mode (default)
Pins 2-3 Debug Mode
VGA Enable/Disable
Jumper Settings (JPG1)
Jumper Setting Definition
Pins 1-2 Enabled (default)
Pins 2-3 Disabled
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Chapter 3: Motherboard Connections