---
title: pciConfigSpaceStartBusNumber
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.0+]
path: kernel/boot_args/1506972-pciconfigspacestartbusnumber
---

# pciConfigSpaceStartBusNumber

## Declaration

```occ
uint32_t pciConfigSpaceStartBusNumber;
```