---
title: IOUSBIsocStruct
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 18.4+, macOS 10.0+]
path: iokit/iousbisocstruct
---

# IOUSBIsocStruct

## Declaration

```occ
typedef struct IOUSBIsocStruct {
    ...
} IOUSBIsocStruct;
```

## Topics

### Instance Properties

- [fBufSize](iokit/iousbisocstruct/1426278-fbufsize.md)
- [fBuffer](iokit/iousbisocstruct/1425650-fbuffer.md)
- [fFrameCounts](iokit/iousbisocstruct/1425723-fframecounts.md)
- [fNumFrames](iokit/iousbisocstruct/1425460-fnumframes.md)
- [fPipe](iokit/iousbisocstruct/1426292-fpipe.md)
- [fStartFrame](iokit/iousbisocstruct/1426034-fstartframe.md)