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# IOUSBHost Data Types

## Topics

### Data Types

[`typealias IOUSBHostCIDoorbell`](/documentation/IOUSBHost/IOUSBHostCIDoorbell)

[`typealias IOUSBHostCIPortStatus`](/documentation/IOUSBHost/IOUSBHostCIPortStatus)

[`typealias IOUSBHostControllerInterfaceCommandHandler`](/documentation/IOUSBHost/IOUSBHostControllerInterfaceCommandHandler)

[`typealias IOUSBHostControllerInterfaceDoorbellHandler`](/documentation/IOUSBHost/IOUSBHostControllerInterfaceDoorbellHandler)

[`typealias IOUSBHostIsochronousTransactionCompletionHandler`](/documentation/IOUSBHost/IOUSBHostIsochronousTransactionCompletionHandler)


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