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  "identifier" : "/documentation/USBDriverKit/IOUSBIsochronousFrame",
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  "title" : "IOUSBIsochronousFrame"
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# IOUSBIsochronousFrame

A structure representing a single frame in an isochronous transfer.

```
struct IOUSBIsochronousFrame;
```

## Topics

### Getting the Frame Properties

[`IOReturn status;`](/documentation/USBDriverKit/IOUSBIsochronousFrame/status)

The completion status for this individual frame.

[`uint32_t requestCount;`](/documentation/USBDriverKit/IOUSBIsochronousFrame/requestCount)

The number of bytes to transfer for this frame.

[`uint32_t completeCount;`](/documentation/USBDriverKit/IOUSBIsochronousFrame/completeCount)

The number of bytes actually transferred for this frame.

[`uint32_t reserved;`](/documentation/USBDriverKit/IOUSBIsochronousFrame/reserved)

Reserved for future use.

[`uint64_t timeStamp;`](/documentation/USBDriverKit/IOUSBIsochronousFrame/timeStamp)

The frame’s observed completion time.


---

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