---
title: USB Accessory Audio Source Dictionary Keys
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/usb-accessory-audio-source-dictionary-keys
---

# USB Accessory Audio Source Dictionary Keys

Keys for the dictionaries in the kAudioSessionProperty_InputSources array.

## Topics

### Constants

- [kAudioSession_InputSourceKey_ID](audiotoolbox/kaudiosession_inputsourcekey_id.md)
- [kAudioSession_InputSourceKey_Description](audiotoolbox/kaudiosession_inputsourcekey_description.md)

## See Also

### USB Accessories

- [USB Accessory Audio Destination Dictionary Keys](audiotoolbox/usb-accessory-audio-destination-dictionary-keys.md)