Figure 13: Rj45 I2C Connector - Mellanox Technologies IS5025D-1BRC User Manual

QDR InfiniBand Switch Platform User Manual
3.4.2.2 RJ-45 Connector (I2C) Externally Managed Switches only
All firmware updates should be done in-band using Mellanox Firmware Management Tools.
This interface is for Debug and Troubleshooting only.
users only.
You will need to order an MTUSB-1 USB to I2C adapter to make use of the I2C interface. An
HAR 000022 harness is included in the MTUSB-1 package to connect the switch for updating
FW. The I2C connection provides access to Flash and EEPROMs. This connection allows access
to the switch for updating FW. See Section 4.3.
3.4.2.3 RJ-45 Ethernet Connector (MGT) Internally Managed Switches
The Ethernet connection labelled "MGT" provides access for remote management. The IS50XX
can be connected to an Ethernet switch or the Ethernet port of a computer.
The switch with the FabricIt management module has an extra Ethernet connector below the
MGT connector shown in Figure 12.
Note: These connector(s) are not found in unmanaged (externally managed) switches.
Each Ethernet connector gets connected to Ethernet switches. These switches
must be configured to 10/100M auto-negotiation.
The unmanaged switches are Plug and Play and all firmware updates should be done
in-band. The I2C connection should only be used if the FW image was corrupted to the
point that the regular FW tools cannot successfully reburn the correct image.

Figure 13: RJ45 I2C Connector

IS5025
I2C
This interface is for FAEs and advanced
Mellanox Technologies
Rev 3.4
23