Getting scsi to work right on my system was a nightmare.
I have an Adaptec 2940 card.
To get it to work, I did NOT use the external connection on the card. Rather, I used a bridge connection from the scsi cable to a separate slot opening on the back of the pc.
Why did I do that? Because I fiddled around and found that if I opened the Emu and the pc up. And used an internal scsi cable from the card to the motherboard of the sampler - it worked. Otherwise it was a no-go.
So I bought the bridge and it worked just fine.
Also. Don't use the EOSLink software if you are going to transfer samples (or copy an entire CD) across the SCSI bus. And don't beat munge. You will lock up the computer and the sampler. Bummer.
One last tip. Buy everything at a local computer store, then you can buy the parts you _think_ you'll need, and quickly return them if they don't work.