Operating System Requirements: macOS 10.14-macOS 12 Description: This software informs macOS that the Echo 11 Thunderbolt 3 Dock and the Echo 15 Thunderbolt 2 Dock can provide 7.5W USB power, which allows the Dock's USB 3 port to: charge iOS devices at 7.5W instead of 5W; power the Apple SuperDrive; and power bus-powered USB peripherals plugged into an Apple USB keyboard. This software is not required for any other periperals or purpose.
This software is compatible with macOS 10.14-macOS 12. This software is enabled only when you first connect all the appilcable USB devices, and then hot-plug the Dock's Thunderbolt connection to the Mac.
The Left and Right Audio Channels on the Echo 15+ Dock are reversed in both the front and rear.
To fix in Mac OS:
1. Open the application Audio Media Setup.
2. Select USB Advanced Audio Device.
3. Click Configure Speakers.
4. Under Left front speaker, select Front Right.
5. Under Right front speaker, select Front Left.
6. Click Apply.
7. Click Done.