Applies to: Scarlett, Clarett USB interfaces

Previously, Focusrite has issued drivers for USB devices on older Mac operating systems, however, we would now recommend not installing any drivers that you might find online or on old CD installer discs when using one of our USB interfaces on Mac computers.

If you happen to install an old Focusrite driver by mistake then this could cause a number of issues, including:

- Glitchy audio

- Your device appearing only as an input device with no outputs available

To remove any potentially problematic drivers you may have installed, you can run our Class Compliant application, which is attached at the bottom of this article.

Alternatively, you can manually delete drivers by going to Finder > click 'Go' at the top of the screen > select 'Computer' > Mac HD > System > Library > Extensions. In this folder, remove any files named 'FocusriteUSB2Audio.kext' and then restart the computer.

If you continue to have audio issues, please see the following article:

I'm getting issues with an interface on my Mac, how do I Delete my Audio Preferences on Mac OS X?