I need some help. I am purchasing a 27: iMac and the new Imac's have done away with Firewire 400 and 800 I have Digital Converter [ADVC 110] It uses a 6-pin FireWire (IEEE 1394a) cable. to power it. http://www.grassvalley.com/products/advc110 Does any one know how I could hook it up to the New Imac? USB 3 or thunderbolt?