Any old cable should work. Do you actually have the ODEM card though? Those things are tough to find.
I was reading through sales listings of SCSI cables. Unfortunately, it looks like there are multiple "versions/revisions" of SCSI(?). If this is true, would this cable here work with the GDEV? If not, what configuration do I need (ie 24-pins/ male-male, etc)?
You need the male-male cable of 68 pins from what I remember. Wait for the unit to arrive then browse the pics on ebay!
Its an SCSI II connector M/M HD68 (not VHDCI). You will find it on ebay, like this: http://cgi.ebay.com/Genuine-SUN-SYS...033?pt=LH_DefaultDomain_0&hash=item5d2b7f71d9