Supermicro SuperStorage 2029P-E1CR48H - Page 67

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Chapter 4: Motherboard Connections
4-pin BMC External I2C Header
A System Management Bus header for IPMI 2.0 is located at JIPMB1. Connect the appropriate
cable here to use the IPMB I2C connection on your system. Refer to the table below for pin

External I2C Header
Pin Denitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 No Connection
NVMe SMBus Headers
NVMe SMBus (I2C) headers (JNVI2C1/2), used for PCI-E SMBus clock and data connections,
provide hot-plug support via a dedicated SMBus interface. This feature is only available for a
Supermicro complete system with an SMCI-proprietary NVMe add-on card and cable installed.

NVMe SMBus Header
Pin Denitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 VCCIO
SMB (I2C) for LCD Connector
The connector used for System Management Bus (I2C) for LCD devices is located at JI2C_
FP1. Connect a cable here to provide health monitoring and management for LCD devices.
SMB (I2C) for SAS3 Backplanes Connectors
JI2C_EXP1/2 connectors are used for System Management Bus (I2C) for the devices installed
on the SAS3 backplanes. Connect appropriate cables to these connectors for SAS3 health
monitoring and system management.