In that case you can use a USB cable to connect your keyboard to your computer. If you already have CollaB3 downloaded you will need a VST host in order to use the CollaB3 VST. I use Reaper which is a recording program that also acts like a VST host. Once you open CollaB3 in the VST host you can use your keyboard to send midi to the VST host that will play the CollaB3 sounds.