---
title: kIOUSB30LinkStatePollingIdleTimeout
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/tiousb30linkstatetimeout/kiousb30linkstatepollingidletimeout
---

# kIOUSB30LinkStatePollingIdleTimeout

The polling idle timeout.

## Declaration

```occ
kIOUSB30LinkStatePollingIdleTimeout = 2
```