---
title: kUSBRootHubPollingRate
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1643686-anonymous/kusbroothubpollingrate
---

# kUSBRootHubPollingRate

## Declaration

```occ
kUSBRootHubPollingRate = 32
```