---
title: kIOUSB30LinkStateU1PingTimeout
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/tiousb30linkstatetimeout/kiousb30linkstateu1pingtimeout
---

# kIOUSB30LinkStateU1PingTimeout

The U1 ping timeout.

## Declaration

```occ
kIOUSB30LinkStateU1PingTimeout = 300
```