Onboard Speaker Enable/Disable; 3Rd Power Supply Fail Signal Enable/Disable; Watch Dog Enable/Disable - Supermicro Supero H8DAR-T User Manual

Onboard Speaker Enable/
Disable
The JD1 header allows you to use
either an external speaker or the
internal (onboard) speaker. To use
the internal (onboard) speaker, close
pins 6 and 7 with a jumper. To use an
external speaker, connect the speaker
wires to pins 4 through 7 of JD1. See
the table on the right for settings and
the table associated with the Power
LED/Speaker connection (previous
section) for pin defi nitions.
3rd Power Supply Fail Signal
Enable/Disable
The system can notify you in the event
of a power supply failure. This feature
assumes that three redundant power
supply units are installed in the chas-
sis. If you only have one or two power
supplies installed, you should disable
the function with the J3P header to pre-
vent false alarms. See the table on the
right for jumper settings.

Watch Dog Enable/Disable

JWD controls the Watch Dog function.
Watch Dog is a system monitor that
can reboot the system when a software
application hangs. Pins 1-2 will cause
WD to reset the system if an applica-
tion has frozen. Pins 2-3 will generate
a non-maskable interrupt signal for the
application that is frozen. See the table
on the right for jumper settings. Watch
Dog must also be enabled in BIOS.

Onboard Speaker Enable/Disable

Pin Defi nitions (JD1)
Pins Defi nition
6-7 Jump for onboard speaker
4-7 Attach external speaker wires
3rd Power Supply Fail Signal
Jumper Settings (J3P)
Jumper Setting
Open
Closed
Jumper Settings (JWD)
Jumper Setting
Pins 1-2
Pins 2-3
Open
Note: When enabled, the user needs to
write their own application software in or-
der to disable the Watch Dog Timer.
2-17
Chapter 2: Installation
Defi nition
Enabled
Disabled
Watch Dog
Defi nition
Reset
NMI
Disabled