Dude, you are un informed, big time, relax!!!
Its called a FW 800 cable end to a FW 400 end, I use them all the time, for data and video capture. The FW 800 spec includes 400, no need for additional 400 port when you have an 800 port
If I heard right, the new Pro has eliminated the Firewire400 port (1394a).
This is going to be a HUGE problem for videographers using MacBook Pro's to download raw footage, as most videocams have 400, not 800 (1394b).
Frankly, I don't want to have to use an express card, and the problems that will ensue to be able to use my cam. Guess I'll stick with my older Macbook Pro 17 that HAS the 400 port (I also have external hard drives at 400 to contend with)
GRRRRRR!!!!
Its called a FW 800 cable end to a FW 400 end, I use them all the time, for data and video capture. The FW 800 spec includes 400, no need for additional 400 port when you have an 800 port