---
title: GetDeviceProtocol
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbdeviceinterface942/2977156-getdeviceprotocol
---

# GetDeviceProtocol

## Declaration

```occ
IOReturn (*GetDeviceProtocol)(void *self, UInt8 *devProtocol);
```