Weaknees has already upgraded their Series3 to 750GB {Engadget HD}

Sep 15th 2006 3:16AM The firewire port IS enabled. Its mandatory and the law. Stick in a firewire cable and the other end to a PC/Mac. Should recognize. If it doesn't, tell comcast that you need a new box, as the FCC requires all cable boxes to have their firewire ports on and working (not usb...just firewire)