Unless you are on a Beige G3, Yes, you need an USB to Mac Serial adapter and even that is dicey. I'm looking for the even more obscure RS422 to USB adaptor for sample editing on my Emax2. -- Jay Shaffer Mac Audio Guy Author of "The MacAddict Guide to Making Music with GarageBand" mag at macaudioguy.com http://macaudioguy.com/ On Oct 18, 2004, at 3:20 PM, RoomOneRecording at aol.com wrote: > I am trying to use an opcode studio 64 x for my midi interface for mac > os x and protools 6, do i need a certain cable ? > > > > _______________________________________________ > MacProAudio mailing list > MacProAudio at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/macproaudio >