---
title: kUSBHighSpeedMicrosecondsInFrame
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 18.4+, macOS 10.2+]
path: iokit/1425805-microsecondsinframe/kusbhighspeedmicrosecondsinframe
---

# kUSBHighSpeedMicrosecondsInFrame

## Declaration

```occ
kUSBHighSpeedMicrosecondsInFrame = 125
```

## Discussion

Discussion The device is attached to a bus running at high speed (125 microseconds / frame).