---
title: bNumDeviceCaps
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.7+]
path: iokit/iousbbosdescriptor/1425552-bnumdevicecaps
---

# bNumDeviceCaps

## Declaration

```occ
uint8_t bNumDeviceCaps;
```