How can I confirm that the USB driver is installed properly, on OS X?

1. First make sure your KDJ500 is connected to the computer.

2. Open the Apple System Profiler:

Macintosh HD->Applications->Utilities->System Profiler

3. Confirm that the USB driver is installed:

Select the "Hardware" item in the left panel.

Locate the "USB" section.

In this section there should be a box labeled "USB Bus <-> Kontrol Dj Professional Controller". If you don't see this, then the USB driver is not installed correctly.

If you do see a box labeled "USB Bus <-> Kontrol Dj Professional Controller" there should be an arrow to the left of the box. Click on this arrow to get some more details. In particular, you should see that the Manufacturer is KDJ.

4. Confirm that the USB hardware is working properly and is being found by the driver:

Invoke a terminal ( Macintosh HD->Applications->Utilities->Terminal )

In the terminal application, type:

ls /dev/tty.usb*

You should see something like

/dev/tty.usbserial-KDJ00337

It's ok if the number is different (...the number represent the serial number of the controller).

5. If this all works you should be able to use your controller.