Supermicro H8DGU-LN4F+, User Manual

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H8DGU-LN4F+ Serverboard User's Manual
2-22
LAN1/2/3/4 Enable/Disable
Change the setting of jumper JPL1
to enable/disable the LAN1/LAN2
Ethernet ports and JPL2 to enable/
disable the LAN3/LAN4 Ethernet ports.
See the table on the right for jumper
settings. The default setting is enabled.
LAN1/2/3/4 Enable/Disable
Jumper Settings
(JPL1/JPL2)
Jumper Setting Defi nition
Pins 1-2 Enabled
Pins 2-3 Disabled
Watch Dog Enable/Disable
JWD1 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. See the table
on the right for jumper settings. Watch
Dog must also be enabled in BIOS.
Watch Dog
Jumper Settings (JWD1)
Jumper Setting Defi nition
Pins 1-2 Reset
Pins 2-3 NMI
Open Disabled
Note: when Watch Dog is enabled, the user must write
their own application software to disable the Watch Dog
Timer.
I2C to PCI-Express Slot
JI
2
C1/JI
2
C2 allows you to enable the
I
2
C 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 on the right for jumper
settings.
I 2 C to PCI-Express Slot
Jumper Settings
(JI
2
C1/JI
2
C2)
Jumper Setting Defi nition
Closed Enabled
Open Disabled
VGA Enable/Disable
JPG1 allows you to enable or disable
the VGA port. The default position is on
pins 1 and 2 to enable VGA. See the
table on the right for jumper settings.
VGA Enable/Disable
Jumper Settings (JPG1)
Jumper Setting Defi nition
Pins 1-2 Enabled
Pins 2-3 Disabled