This applies to the Audiohub 2x4
If you are using an Audiohub 2x4 on a Mac, no driver installation is needed as it is a class compliant interface and uses the Apple Core Audio driver. However, if the Audiohub 2x4 doesn't appear in System Preferences > Sound the reason may be caused by having the Novation USB Driver 2.3 installed on your computer (possibly due to owning other Novation devices).
This was a problem in the Novation USB Driver 2.3 that was fixed in the 2.5 release. Please remove the Novation driver by going to file path it is stored in and moving it to the Trash/Bin. Then empty the Trash/Bin and restart the computer. The file path can be found by going to Apple Logo > About This Mac > System Profile and looking for the driver in the extensions section.
If you still have any trouble with your interface in class compliant mode please contact us.