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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.
I
2
C to PCI Enable/Disable
The JI
2
C1/2 pair of jumpers allows you
to connect the System Management
Bus to any one of the PCI expansion
slots. The default setting is closed (on)
for both jumpers to enable the connec-
tion. Both connectors must be set the
2
same (JI
C1 is for data and JI
the clock). See the table on right for
jumper settings.
Audio Enable/Disable
Jumper JPAC is used to enable or dis-
able the audio. Onboard audio is pro-
vided by AC97 audio CODEC for high
quality 6-channel (5.1) sound. The de-
fault setting is on pins 1-2 to enable the
audio. See the table on right for jumper
settings.
2
C2 is for
2-17
Chapter 2: Installation
3rd Power Supply Fail Signal
Jumper Settings (J3P)
Jumper Setting
Defi nition
Open
Disabled
Closed
Enabled
2
I
C to PCI Enable/Disable
Jumper Settings
2
(JI
C1/2)
Jumper Setting
Defi nition
Closed
Enabled
Open
Disabled
Audio Enable/Disable
Jumper Settings (JPAC)
Jumper Setting Defi nition
Pins 1-2
Enabled
Pins 2-3
Disabled
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