---
title: kIOUSBHostPipeBundlingMax
framework: usbdriverkit
role: symbol
role_heading: Enumeration Case
path: usbdriverkit/kiousbhostpipebundlingmax
---

# kIOUSBHostPipeBundlingMax

The maximum number of elements to transfer in one bundled I/O call.

## Declaration

```occ
kIOUSBHostPipeBundlingMax
```