Q. Should I upgrade to a Mac Pro for more Firewire ports?
Amazon.com: Pasow FireWire 1394b 800 IEEE 9 Pin to 9 Pin Male to Male Cable for Mac Pro, MacBook Pro, Mac Mini, iMac PC,Digital Cameras, SLR (9 pin to 9 pin) : Electronics
Amazon.com: elago FireWire 400 to 800 Adapter (White) for Mac Pro, MacBook Pro, Mac Mini, iMac and All Other Computers : Electronics
Why do I need Firewire and what is it?
Apple Thunderbolt to FireWire Adapter Thunderbolt Male To FireWire 800 Female, MD464LL/A | Full Compass Systems
The tragedy of FireWire: Collaborative tech torpedoed by corporations | Ars Technica