---
title: DeviceRequest
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbdeviceinterface942/2977139-devicerequest
---

# DeviceRequest

## Declaration

```occ
IOReturn (*DeviceRequest)(void *self, IOUSBDevRequest *req);
```