Specifications

128 007-4276-001
A: Technical Reference
provides a mechanism for chassis power control. As an option, you can configure a
server with an ICMB adapter board to provide two SEMCONN 6-pin connectors for
daisy-chained cabling. Table A-29 shows the cable pinout assignments for the ICMB
connector.
Auxiliary I
2
C Connector (J9E4)
The baseboard provides a 3-pin auxiliary I
2
C connector for OEM access to the IPMB. This
connector is not isolated when power is off. Any devices connected must remain
powered in this state or the BMC will not work properly.
AshortedI
2
C connection at the auxiliary I
2
C connector will prevent restoration of main
power because the BMC needs the bus to boot the server from standby power. Table A-30
shows the cable pinout assignments for the IMB connector.
Baseboard Fan Connectors (J3C1, J3A1, J4A1, J4C1)
There are four fan connectors located on the baseboard. Use these connectors are for
additional processor cooling.
Table A-29 ICMB Connector (J1D2)
Pin Signal Type Description
1 SDA signal IPMB I2C Data
2Ground power
3 SCL signal IPMB I2C Clock
45Vstandbypower
Table A-30 IMB Connector (J8F1)
Pin Signal Description
1LocalI
2
CSDA BMCIMB5VSTNDBYclockline
2GROUND
3LocalI
2
C SCL BMC IMB 5VSTNDBY data line