Saturn MK-80000

I'm 99% sure that's a Model 1 Saturn.

Which means it would need a 20 pin mod.

To confirm the Model #, what shaped power and reset buttons does it have?
One of the FAQs from gamesfaqs lists the MK 80000 as the first American model made.

I only said 99% because I haven't seen it for myself.
Theres a white ribbon cable connecting the CD drive assembly to the main board. Simply pull that out (it's v/easy) and count the pins on it.