Each Mellanox adapter card has a different identifier printed on the label: serial number, and the card MAC for the Ethernet protocol.
![image2019-2-10_19-7-1.png](https://docscontent.nvidia.com/dims4/default/67ba798/2147483647/strip/true/crop/718x264+0+0/resize/718x264!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F00000187-94ca-d3c2-a7af-9fde508d0000%2Fimages%2Fnetworking%2Fdownload%2Fattachments%2F11996021%2Fimage2019-2-10_19-7-1.png)
Each Mellanox adapter card has a different identifier printed on the label: serial number, and the card MAC for the Ethernet protocol.