The Ketron SD2 has no USB connect of its own. The Device uses standard MIDI round connection. You must have some other mfr's USB MIDI device in the MIDI signal chain if you are hooked up to your computer proerly. The MIDI Out of the SD-2 is the only MIDI data cable needed and inside any host program that can use a MIDI device that will be identified as itself, or if it is a Class Compliant USB-to-MIDI device, which means that the device does not require installation of specific drivers, it will likely be identified by Widows as "USB Audio Device" or something similar.

That one MIDI data connection will not allow you to hear the output of the SD2, however. For that you must also hook up a pair of Audio cables, L & R channels, to the RCA jacks on the Ketron and the other ends to the Line Inputs of your sound card or sound device. Then you must also select the Line Input as the active input device on your sound device, as well as selecting that particular sound device in the Audio section of your host program. This would be your mixer.

I use both Firewire and USB devices at the same time and have never encountered it being an "either or" situation. The only trouble one may have along those lines would be if they were experiencing audio dropouts because the Firewire and USB ports happened to share an IRQ inside their machine. Since you have no audio at all, I doubt it would be that. This sounds like a routing assignment and/or hookup problem at present time.


--Mac

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