Supermicro A+ AS -2015A-TR User Manual page 60

VGA Enable/Disable (JPG1)
JPG1 allows you to enable or disable the VGA port using the onboard graphics controller.
The default setting is Enabled.
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
(NMI) 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 needs to write their own application software
to disable it.
Unit Identifier Switch
A Unit Identifier (UID) switch and an LED Indicator are located on the motherboard. The UID
switch is located at JUIDB1, which is next to the VGA port on the back panel. The UID LED
is located next to the UID switch. When you press the UID switch, the UID LED will be turned
on. Press the UID switch again to turn off the LED indicator. The UID Indicator provides easy
identification of a system unit that may be in need of service.
Note: The UID can also be triggered via IPMI on the motherboard. For more information on
IPMI, please refer to the IPMI User's Guide posted on our website at
com.
VGA Enable/Disable
Pin Definitions
Pin# Definition
1-2 Enabled
2-3 Disabled
Watch Dog
Jumper Settings
Jumper Setting Definition
Pins 1-2 Reset (Default)
Pins 2-3 NMI
Open Disables
UID Switch
Pin Definitions
Pin# Definition
1 GND
2 GND
3 Button In
4 Button In
60
Chapter 4: Motherboard Connections
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