I have read a couple FAQs and got some answers to questions I had. Here are the unanswered questions.

How many expansion slots are in the Pro X and other models?

Has anyone installed the 3rd party Internal HD interface from? http://www.musitronics.de/info-e/TritionHD_info_e.html

If so what are your thoughts and does it allow you to load up samples right away?

Would it just be better to have an external SCSI device to access samples quicker?

Are external SCSI HDs supported, what type (ultra wide)?

Thanks