4-Pin to 6-Pin Firewire cable into new iMacs?

Hi,

I have the new 27inch model iMac and as we know they have no firewire ports. I've got a Firewire to Thunderbolt adapter for my two external Firewire 800 hard drives.

Question is I have my old Mini DV camcorder that I used to plug in with a 4-Pin to 6-Pin Firewire cable. How do I go about gettinbg this camcorder hooked up to the new iMac?

Thhis was the cable I used to use:

Thank you for any assistance.