I have and use a Nikon 8000 Cool Scan medium Format Film Scanner. Long ago discontinued. It too, required Firewire, so when I had my PC built about 12 tears ago, it included a Firewire port. Well the Firewire card died recently, and I was able to get a new card....but belonging to a Facebook Coolscan Group, I was told (quite correctly) that the Coolscans must have a "Special" Firewire" card. Off hand I don't remember which brand it had to be. The Coolscans were delivered new with the specific Firewire Card included with the scanner. BTW I see many people struggling trying to copy old slides and negatives with digital cameras. At 88 years old the thoughts of lining up the camera, slide and keeping them parallel would be a nightmare. The Coolscan scans at 4,000 dpi and the resolution supports very big prints -- "24"x32"-the biggest my printer can handle.
Good luck
Dave in NJ