3D controller: NVIDIA Corporation Device 2330 (rev b0), what is the b0 behind it

The server is an H100 GPU
Firstly, there is lspci | grep - i nvidia. One card reads as 3D controller: NVIDIA Corporation Device 2330 (rev b0), while the other seven normal cards are followed by (rev a1). After the server is powered off and restarted, this card cannot be read anymore. ‘lspci’, ‘nvidia smi’, or the server’s IPMI web interface are still missing