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QDR InfiniBand Switch Platform User Manual
The I2C connector should only be used when the firmware cannot be updated in-band.
Use the MTUSB-1 adapter (available from Mellanox) to reprogram the switch firmware using a
server or PC running MFT.
The MTUSB adapter comes with three cables, but has only two connections for cables. One cable
is an I2C cable with DB9 female connectors on both ends. One cable is a I2C cable with DB9
female connector to RJ45 male. Use the cable that matches your switch. The other is a USB cable
with one type A host connection to be connected to the server or PC and a type B connection to be
connected to the MTUSB adapter.
With the switch connected to a computer through the MTUSB, it is now possible to reprogram the
SPI Flash memory.
4.3.2.3
Instructions for Reprogramming Through the I2C Port:
1.
Make sure that:
the MTUSB I2C cable is connected to the switch and USB cable is connected to a computer
Figure 28: MTUSB-1 with Cables
Figure 29: I2C Cable Connected to IS5025
IS5025
I2C
Mellanox Technologies
Rev 2.9
43
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