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# ReportDataBandwidths

Reports the input and output bandwidth between the device and your driver to the system.

```
virtual kern_return_t ReportDataBandwidths(uint64_t maxInputBandwidth, uint64_t maxOutputBandwidth, uint64_t effectiveInputBandwidth, uint64_t effectiveOutputBandwidth);
```

## Parameters

`maxInputBandwidth`

The maximum theoretical data rate for receiving data with the current medium, in bits per second.

`maxOutputBandwidth`

The maximum theoretical data rate for sending data with the current medium, in bits per second.

`effectiveInputBandwidth`

The effective input bandwidth, in bits per second. If you specify `0`, the system sets the effective bandwidth to the same value in `maxInputBandwidth`.

`effectiveOutputBandwidth`

The effective output bandwidth, in bits per second. If you specify `0`, the system sets the effective bandwidth to the same value in `maxOutputBandwidth`.

## Return Value

`kIOReturnSuccess` on success, or another value if an error occurred.

---

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