---
title: Low-Level Information
framework: hiddriverkit
role: collectionGroup
role_heading: API Collection
path: hiddriverkit/low-level-information
---

# Low-Level Information

Understand the underlying structures that support HID drivers.

## Topics

### Internal Structures

- [IOHIDCompletionAction](hiddriverkit/iohidcompletionaction.md)
- [IOHIDCompletion](hiddriverkit/iohidcompletion.md)
- [HIDReportCommandType](hiddriverkit/hidreportcommandtype.md)
- [HIDActionType](hiddriverkit/hidactiontype.md)

### Version Information

- [HIDDriverKitVersionNumber](hiddriverkit/hiddriverkitversionnumber.md)
- [HIDDriverKitVersionString](hiddriverkit/hiddriverkitversionstring.md)

## See Also

### HID Device Data

- [IOHIDElement](hiddriverkit/iohidelement.md)
- [IOHIDDigitizerCollection](hiddriverkit/iohiddigitizercollection.md)
- [com.apple.developer.hid.virtual.device](bundleresources/entitlements/com.apple.developer.hid.virtual.device.md)