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Chapter 4: Motherboard Connections
4-pin BMC External I
2
C Header
A system Management Bus header for IPMI 2.0 is located at JIPMB1. Connect the appropriate
cable here to use the IPMB I
2
C connection on your system. Refer to the table below for pin
definitions.
External I
2
C Header
Pin Definitions
Pin#
Definition
1
Data
2
Ground
3
Clock
4
P3V3 STBY
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to inform you of a chassis intrusion when the chassis is opened. Refer to
the table below for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
SGPIO Headers
Two Serial Link General Purpose Input/Output headers (I-SGPIO1, I-SGPIO2) are located on
the motherboard. They are used to communicate with the enclosure management chip on the
backplane support the onboard I-SATA 3.0 ports. Refer to the table below for pin definitions.
S-SGPIO Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
NC
2
NC
3
Ground
4
Data
5
Load
6
Ground
7
Clock
8
NC
NC = No Connection