---
title: io
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iousbhostpipe/3516808-io
---

# io

## Declaration

```occ
virtual IOReturn io(IOMemoryDescriptor *dataBuffer, IOUSBHostIsochronousFrame *frameList, uint32_t frameListCount, uint64_t firstFrameNumber, IOUSBHostIsochronousCompletion *completion);
```