---
title: UISupportedExternalAccessoryProtocols
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/uisupportedexternalaccessoryprotocols
---

# UISupportedExternalAccessoryProtocols

The protocols that the app uses to communicate with external accessory hardware.

## Discussion

Discussion Add this key to your app’s Info.plist file, and set the value to the names of the hardware protocols your app supports. You format protocol names as reverse-DNS strings. For example, the string “com.apple.myProtocol” might represent a custom protocol that Apple defines. Manufacturers can define custom protocols for their accessories or work with other manufacturers and organizations to define standard protocols for different accessory types.

## See Also

### External accessories

- [UIApplicationSupportsPrintCommand](bundleresources/information-property-list/uiapplicationsupportsprintcommand.md)