PCI bus ID format in nvidia-smi

Accelerated Computing CUDA CUDA Programming and Performance
1

After updating the driver, the PCI bus ID format changed. I want to
know the reason.

  • Driver Version: 390.30, 387.34 
nvidia-smi -q | grep "Bus Id"
     Bus Id : 00000000:18:00.0
     Bus Id : 00000000:AF:00.0
  • Driver Version: 375.39 
nvidia-smi -q | grep "Bus Id"
     Bus Id : 0000:18:00.0
     Bus Id : 0000:AF:00.0