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Power LED/Speaker
On JD1, pins 1, 2, and 3 are for the
power LED and pins 4 through 7 are
for the speaker. See the tables on the
right for pin defi nitions.
Note: The speaker connector pins are
for use with an external speaker. If
you wish to use the onboard speaker,
you should close pins 6 and 7 with a
jumper.
SMBus Header
The System Management Bus header
is located at JSMB1. Connect the ap-
propriate cable here to utilize SMB on
your system. See the table on the right
for pin defi nitions.
2
SMBus Power (I
The JPI
2
C header is for the SMB
power connector, which may be used
to monitor the status of the power sup-
ply. See the table on the right for pin
defi nitions.
Overheat LED
Connect an LED to the JOH1 header
to provide warning of a chassis over-
heating condition. See the table on the
right for pin defi nitions.
C) Header
2-13
Chapter 2: Installation
PWR LED Connector
Pin Defi nitions (JD1)
Pin#
Defi nition
1
+Vcc
2
-Vcc
3
-Vcc
Speaker Connector
Pin Defi nitions (JD1)
Pin#
Defi nition
4
Red wire, Speaker data
5
No connection
6
Buzzer signal
7
Speaker data
SMBus
Pin Defi nitions (JSMB1)
Pin#
Defi nition
1
Data
2
Ground
3
Clock
4
N/A
2
SMB Power (I
C)
Pin Defi nitions (JPI
2
C)
Pin#
Defi nition
1
Clock
2
SMB Data
3
N/A
4
N/A
5
N/A
Overheat LED
Pin Defi nitions (JOH1)
Pin#
Defi nition
1
+5V
2
OH Active
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