So just like Yosemite this driver is DOA. Both directly connected to USB port and via Hub, The preference pane for the Mbox 2 says it's not connected, and under sound (System Preference) it doesn't show up at all. So there is some sort of connection but it does not register at all and it basically useless at the moment, but maybe Avid can do some investigating and work with Apple to find a resolution to the problem.ġ0.3.9 Drivers - Installs fine, lights are all dim with really no signs of life. The preference pane for the Mbox 2 says it's not connected, and under sound (System Preference) it doesn't show up at all. My tests were conducted with 10.11 GM Candidate and then updated to 10.11.1 Public Beta 1.ġ0.3.3 Drivers - Installed fine, all green lights on Mbox 2 device are bright green as if everything is working fine, Both directly connected to USB port and via Hub. Over the last couple of days I've installed OS X El Capitan 10.11 GM Candidate and any updates that were available up to Septemon a spare hard drive as I'm apart of the public beta program for El Capitan, and the results are not good if you plan on using your Mbox 2 or related drivers. If you were considering upgrading you Mac OS X to El Capitan 10.11 I would deeply reconsider that if you are using an Mbox 2 related devices.