Disklavier

Im wondering if I can get some help with connecting my Disklavier to my macbook  since at the moment my computer doesnt recognise the Disklavier.

I have USB to USB cable running from macbook to I/O center but this doesnt seem to work or at least the Disklavier is not picked up in the audio setup. 

Looking on the side of the I/O center there are other ports (midi in/out) and another type which I think is called a BUS?

Am I using the wrong cable/ ports?

I would be grateful for any sugestions you can give.