Francois, I lost my FW port on a Cube that, eventually, Apple had to take back because they could no longer fix it after MANY attempts. They gave me the newest Quicksilver at the time as a replacement, but my wife still uses my other Cube (one of the very first made) which never gave me any trouble. Sad fact is that your FW port(s) can die, and I think that the entire logic board might have to be replaced to fix it. Problem is that I am not aware of ANY new replacement parts on the market, and you would probably get a re-manufactured board. In my experience with my bad Cube, remanufactured parts bring yet new sets of problems. But, you might get lucky. --Steve