---
title: kIOUSBEndpointDescriptorSynchronizationTypeAsynchronous
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.15+]
path: kernel/3166377-anonymous/kiousbendpointdescriptorsynchronizationtypeasynchronous
---

# kIOUSBEndpointDescriptorSynchronizationTypeAsynchronous

## Declaration

```occ
kIOUSBEndpointDescriptorSynchronizationTypeAsynchronous = (1 << IOUSBBitRangePhase(2, 3))
```