---
title: GetDeviceSpeed
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbdeviceinterface942/2977158-getdevicespeed
---

# GetDeviceSpeed

## Declaration

```occ
IOReturn (*GetDeviceSpeed)(void *self, UInt8 *devSpeed);
```