Penguin Computing Relion 1900e, Technical Manual, Page: 117 / 174

Relion 1900e/2900e Manual
Revision 1.0 102
10.5.4 Hot Swap Backplane I2C* Connectors
The server board includes two 3-pin hot swap backplane I2C* connectors. These are located near the center
of the board near the chipset heat sink, and towards the front left side of the board. Each is labeled as
“HSBP I2C”. When cabled, these connectors provide a communication path for the onboard BMC to a hot
swap backplane, allowing for firmware updates and other platform management functions. These
connectors have the following pin-out.
Table 46. Hot-Swap Backplane I2C* Connector Pin-out
Signal Description Pin#
HSBP Data
1
Ground 2
HSBP Clock 3
10.5.5 SMBus Connector
The server board includes a 3-pin SMBus connector. This connector is located near the front left corner of
the server board and is labeled “SMBus”. When cabled, this connector is used as an interface to the
embedded server management bus.
Table 47. SMBus Connector Pin-out
Signal Description Pin#
SMB Data
1
Ground 2
SMB Clock 3