In case anyone finds this thread, I thought I would chime in with some of my experience with these SCA 80 to 50 adapters.I'm
revivingrecycling this thread to ask a few relevant questions. I was able to find a Formac ProRAID card. Not really what I was looking for but it will be faster than the built-in scsi. Unfortunately, I'm finding it hard to find normal height 68pin SCSI drives that are a good GB fit. Seems like they're as unusual as 50pin and 80 is the new normal.
Has anyone used this adapter to use a 80pin drive? Also, will a 10k RPM drive bake in an 8600? Or bake the 8600, even worse!
Alternatively, I dug out a Sonnet ATA133 PCI card. The booklet states that OS8 is the min (but I really like 7.6). Is 8 truly the min?
It would seem strange that the more sophisticated ProRAID card can work with 7.6 but an ATA card can't.
The ones I found that worked well were these ones: https://www.datastoragecables.com/scsi/internaladapters/sca80/SM-028.html
You need the extra termination resistors on the adapter for it to work properly. The only you linked to has no termination resistors on it, and likely won't work in a Mac (at least from my experience with various Macs and various drives).