---
title: WriteIsochPipeAsync
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977254-writeisochpipeasync
---

# WriteIsochPipeAsync

## Declaration

```occ
IOReturn (*WriteIsochPipeAsync)(void *self, UInt8 pipeRef, void *buf, UInt64 frameStart, UInt32 numFrames, IOUSBIsocFrame *frameList, IOAsyncCallback1 callback, void *refcon);
```