Ion Xbox 360 Drum on GarageBand

Hello Everyone,

Simple question. I borrowed a Ion Drum Rocker for Xbox 360 (http://www.ionaudio.com/products/details/drum-rocker-xbox-model) from a friend and I want to use it as a midi device to play drums in GarageBand.

I have found some tutorials o youtube and google but all of them are very old, with broken links and different OS X.

Does anyone know how to do that?