Need Help Connecting Midi Keyboard to G4

[digital919]

I have a older Yamaha DX-21 Midi Keyboard, and i plan to connect it to to my G4 and run REASON.. What kind of hardware do i need to get this job done? some kind of midi interface that converts it to USB, maybe....


all in all i'm looking for a good midi 401 interface...

Please respond if you can help!!!

Thanks
Digital919