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Power Supply SMBus I
The power System Management Bus
2
(I
C) header is used to monitor the
status of the power supply, fan and
system temperature. See the table on
the right for pin defi nitions.
IPMB I
2
C Connector
A connector for the IPMI (Intelligent
Platform Management Interface) slot
is designated J5. Connect the appro-
priate cable here to utilize this man-
agement feature on your system.
I-Button
An onboard I-Button, located next to
the T-SGPIO1 header, is a computer
chip enclosed in a durable stainless
steel drum. The I-Button stores in-
structions, provides an electronic
interface and allows the HostRAID to
operate with Mega-RAID fi rmware.
Overheat LED/Fan Fail (JOH1)
The JOH1 header is used to connect
an LED to provide warning of chassis
overheating or fan failure. This LED
will blink to indicate a fan failure. Refer
to the tables on right for LED status
and pin defi nitions.
Chapter 5: Advanced Serverboard Setup
2
C Header
Pin#
1
2
3
4
5
OH/Fan Fail LED
States
State
Solid
Blinking
5-19
Power Supply SMBus I2C Header
Pin Defi nitions (J6)
Defi nition
Clock
Data
PWR Fail (Input from PS to MB)
Ground
+3.3V
IPMB Connector
Pin Defi nitions (J5)
Pin#
Defi nition
1
Data
2
Ground
3
Clock
4
No Connection
Overheat LED
Pin Defi nitions (JOH1)
Message
Pin#
Defi nition
Overheat
1
5vDC
Fan Fail
2
OH Active
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