Keystation 49 MK3 and Steinberg UR-RT4


New member
I have connected my M-Audio Keystation 49 MK3 in to my Mac.
I use Pro Tools and it works fine with the sound coming from my computer speakers.
But when I turn on my Steinberg UR-RT4 sound card, I don't get any signal in to Pro Tools when I play the Keystation?
Please, what should I do to make it work with my sound card and Keystation?