---
title: kUSBDeviceProtocol
framework: IOKit
role: symbol
role_heading: Macro
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/kusbdeviceprotocol
---

# kUSBDeviceProtocol

## Declaration

```occ
#define kUSBDeviceProtocol
```

## Discussion

Discussion The field in the USB Device Descriptor corresponding to the device protocol