1. Connect your computer with your DJ equipment using a USB cable. Turn on the power of the DJ equipment.

2. Open [Finder] and select [Applications] from [Go] on the menu bar.

3. Run [Audio MIDI Setup] in the [Utilities] folder.

4. Ensure that [Audio MIDI Setup] is shown on the menu bar. Then, select [Show MIDI Window] or [Show MIDI Studio] from [Window] drop-down menu.

➢ An example of macOS High Sierra

5. [MIDI Studio] window opens up. ➢ [USB MIDI Device] may appear, instead of the connected DJ equipment.

6. Switch [Default] to [New Configuration] from [Configuration] drop-down menu.

➢ An example of macOS High Sierra

7. Make sure that [USB MIDI Device] is changed to the connected DJ equipment.

➢ An example when DDJ-RB is connected to macOS High Sierra.