---
title: IOUSBFamily message codes
framework: IOKit
role: collectionGroup
role_heading: API Collection
path: iokit/usb_h_user-space/iousbfamily_message_codes
---

# IOUSBFamily message codes

## Topics

### Constants

- [kIOUSBMessageCompositeDriverReconfigured](iokit/kiousbmessagecompositedriverreconfigured.md)
- [kIOUSBMessageController](iokit/kiousbmessagecontroller.md)
- [kIOUSBMessageDeviceCountExceeded](iokit/kiousbmessagedevicecountexceeded.md)
- [kIOUSBMessageEndpointCountExceeded](iokit/kiousbmessageendpointcountexceeded.md)
- [kIOUSBMessageExpressCardCantWake](iokit/kiousbmessageexpresscardcantwake.md)
- [kIOUSBMessageFromThirdParty](iokit/kiousbmessagefromthirdparty.md)
- [kIOUSBMessageHubIsDeviceConnected](iokit/kiousbmessagehubisdeviceconnected.md)
- [kIOUSBMessageHubIsPortEnabled](iokit/kiousbmessagehubisportenabled.md)
- [kIOUSBMessageHubPortClearTT](iokit/kiousbmessagehubportcleartt.md)
- [kIOUSBMessageHubPortDeviceDisconnected](iokit/kiousbmessagehubportdevicedisconnected.md)
- [kIOUSBMessageHubReEnumeratePort](iokit/kiousbmessagehubreenumerateport.md)
- [kIOUSBMessageHubResetPort](iokit/kiousbmessagehubresetport.md)
- [kIOUSBMessageHubResumePort](iokit/kiousbmessagehubresumeport.md)
- [kIOUSBMessageHubSetPortRecoveryTime](iokit/kiousbmessagehubsetportrecoverytime.md)
- [kIOUSBMessageHubSuspendPort](iokit/kiousbmessagehubsuspendport.md)
- [kIOUSBMessageNotEnoughPower](iokit/kiousbmessagenotenoughpower.md)
- [kIOUSBMessageOvercurrentCondition](iokit/kiousbmessageovercurrentcondition.md)
- [kIOUSBMessagePortHasBeenReset](iokit/kiousbmessageporthasbeenreset.md)
- [kIOUSBMessagePortHasBeenResumed](iokit/kiousbmessageporthasbeenresumed.md)
- [kIOUSBMessagePortHasBeenSuspended](iokit/kiousbmessageporthasbeensuspended.md)
- [kIOUSBMessagePortWasNotSuspended](iokit/kiousbmessageportwasnotsuspended.md)
- [kIOUSBMessageReallocateExtraCurrent](iokit/kiousbmessagereallocateextracurrent.md)
- [kIOUSBMessageReleaseExtraCurrent](iokit/kiousbmessagereleaseextracurrent.md)
- [kIOUSBMessageRootHubWakeEvent](iokit/kiousbmessageroothubwakeevent.md)