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PD and HDMI work), but the Macbook Pro doesn't recognize any devices beyond the USB hub, in particular mouse movements and keyboard strokes are not recognized by the laptop. It all works on other devices of mine, and mostly works for my Macbook Pro (i.e. If you don’t get a response to your controller’s MIDI input within the app, it could be non-compliant with USB standards.I have a power delivery USB hub that I use to have a single cable I plug into my laptop to connect power, an HDMI monitor, and USB devices. When you move knobs/fader on the controller, you should see the app showing signals.Navigate to the "Scope" tab by pressing "Scope" on the bottom of the screen, and tap "Connect" on the upper left corner of the screen to connect the controller.On the Source tab of the MIDI Scope app, make sure the controller is selected.Connect your controller to your iOS device and run the MIDI Scope app.If you want to test if your controller will work with iOS, you can download the app called “MIDI Scope” from the App Store, then follow these steps: With non-class-compliant controllers and USB audio interfaces, MIDI or audio might not be detected.Īs a result, this is not something that can be changed within the djay software. Since iOS doesn’t have a way to install device drivers, USB devices need to offer standard ‘class-compliant’ hardware that iOS can detect. If you are trying to use a MIDI controller that is not natively supported by djay for iOS, and it isn't detected by your device, it may be that your controller isn't 'class-compliant' on iOS.