Important
RJ-45 Console and I²C interfaces are integrated in the same connector. Due to that, connecting any cable other than the Mellanox supplied console cable may cause an I²C hang.
Using uncertified cables may damage the I²C interface. Refer to the Replacement Parts Ordering Numbers appendix for harness details.
RJ-45 CONSOLE and I²C Pinout
Signal |
Pin# |
Color |
Not connected |
1 |
G/W |
I²C_SCL |
2 |
G |
TXD |
3 |
O/W |
Not connected |
4 |
Bl |
GND |
5 |
Bl/W |
RXD |
6 |
O |
I²C_SDA |
7 |
Br/W |
Not connected |
8 |
Br |
RS232 harness cable (DB9 to RJ45) is supplied to connect a host PC to the switch’s RJ-45 Console port.
RJ45 to DB9 Harness Pinout
![image2023-6-30_15-36-35.png](https://docscontent.nvidia.com/dims4/default/a309f7a/2147483647/strip/true/crop/1062x763+0+0/resize/1062x763!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018b-1598-d221-a1bf-b7f8ecc60000%2Fimages%2Fnetworking%2Fdownload%2Fattachments%2F6891162%2Fimage2023-6-30_15-36-35.png)