---
title: kIOPCIExpressDeviceCapabilitiesKey
framework: pcidriverkit
role: symbol
role_heading: Macro
path: pcidriverkit/kiopciexpressdevicecapabilitieskey
---

# kIOPCIExpressDeviceCapabilitiesKey

## Declaration

```occ
#define kIOPCIExpressDeviceCapabilitiesKey
```