# IOUSBHost Enumerations ## Topics ### Enumerations [`struct IOUSBHostCIControllerState`](/documentation/IOUSBHost/IOUSBHostCIControllerState) [`struct IOUSBHostCIDeviceSpeed`](/documentation/IOUSBHost/IOUSBHostCIDeviceSpeed) [`struct IOUSBHostCIDeviceState`](/documentation/IOUSBHost/IOUSBHostCIDeviceState) [`struct IOUSBHostCIEndpointState`](/documentation/IOUSBHost/IOUSBHostCIEndpointState) [`struct IOUSBHostCIExceptionType`](/documentation/IOUSBHost/IOUSBHostCIExceptionType) [`struct IOUSBHostCILinkState`](/documentation/IOUSBHost/IOUSBHostCILinkState) [`struct IOUSBHostCIMessageStatus`](/documentation/IOUSBHost/IOUSBHostCIMessageStatus) [`struct IOUSBHostCIMessageType`](/documentation/IOUSBHost/IOUSBHostCIMessageType) [`struct IOUSBHostCIPortState`](/documentation/IOUSBHost/IOUSBHostCIPortState) [`struct IOUSBHostCIUserClientVersion`](/documentation/IOUSBHost/IOUSBHostCIUserClientVersion) [`struct IOUSBHostIsochronousTransactionOptions`](/documentation/IOUSBHost/IOUSBHostIsochronousTransactionOptions) [`struct IOUSBHostIsochronousTransferOptions`](/documentation/IOUSBHost/IOUSBHostIsochronousTransferOptions) ### Enumerations [Anonymous](/documentation/IOUSBHost/3612464-anonymous) [Anonymous](/documentation/IOUSBHost/3612465-anonymous) [Anonymous](/documentation/IOUSBHost/3612466-anonymous) [Anonymous](/documentation/IOUSBHost/3612467-anonymous) [Anonymous](/documentation/IOUSBHost/3612468-anonymous) [Anonymous](/documentation/IOUSBHost/3612469-anonymous) [Anonymous](/documentation/IOUSBHost/3612470-anonymous) [Anonymous](/documentation/IOUSBHost/3612471-anonymous) [Anonymous](/documentation/IOUSBHost/3612472-anonymous) [Anonymous](/documentation/IOUSBHost/3612473-anonymous) [Anonymous](/documentation/IOUSBHost/3612474-anonymous) [Anonymous](/documentation/IOUSBHost/3612475-anonymous) [Anonymous](/documentation/IOUSBHost/3612476-anonymous) [Anonymous](/documentation/IOUSBHost/3612477-anonymous) [Anonymous](/documentation/IOUSBHost/3612478-anonymous) [Anonymous](/documentation/IOUSBHost/3612479-anonymous) [Anonymous](/documentation/IOUSBHost/3857646-anonymous) [Anonymous](/documentation/IOUSBHost/3857647-anonymous) [Anonymous](/documentation/IOUSBHost/3857648-anonymous) [`struct IOUSBHostCIControllerState`](/documentation/IOUSBHost/IOUSBHostCIControllerState) [`struct IOUSBHostCIDeviceSpeed`](/documentation/IOUSBHost/IOUSBHostCIDeviceSpeed) [`struct IOUSBHostCIDeviceState`](/documentation/IOUSBHost/IOUSBHostCIDeviceState) [`struct IOUSBHostCIEndpointState`](/documentation/IOUSBHost/IOUSBHostCIEndpointState) [`struct IOUSBHostCIExceptionType`](/documentation/IOUSBHost/IOUSBHostCIExceptionType) [`struct IOUSBHostCILinkState`](/documentation/IOUSBHost/IOUSBHostCILinkState) [`struct IOUSBHostCIMessageStatus`](/documentation/IOUSBHost/IOUSBHostCIMessageStatus) [`struct IOUSBHostCIMessageType`](/documentation/IOUSBHost/IOUSBHostCIMessageType) [`struct IOUSBHostCIPortState`](/documentation/IOUSBHost/IOUSBHostCIPortState) [`struct IOUSBHostCIUserClientVersion`](/documentation/IOUSBHost/IOUSBHostCIUserClientVersion) [`struct IOUSBHostIsochronousTransactionOptions`](/documentation/IOUSBHost/IOUSBHostIsochronousTransactionOptions) [`struct IOUSBHostIsochronousTransferOptions`](/documentation/IOUSBHost/IOUSBHostIsochronousTransferOptions) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)