I just got a Saturn Cartdev Rev. B but it didn't come with a power supply. The other ones I've seen seem to come with a Mega Drive model 1 ac adapter? Would a US Sega Genesis model 1 ac adapter work? I don't have a Genesis ac adapter so I can't test.
Got the ac adapter. It's alive! Now I just need to find a scsi card, scsi cable and snasm2 software. Oddly it came with a standard US Saturn with nmi cable modded in but I already had a Cross modded Saturn.
They're all modded by Cross. VCD port was optional. The parts you seek are all easy - download the software and most SCSI cards will work.
Probably not on this one. The cable is soldered directly to the main board. On both of my Cross consoles, they put a connector in there.