thanks for that explanation

! It is very cool that the fireface 400 can be powered by a simple firewire port on a laptop. My next question, is will I be able to record and playback 8 channels of 24bit/88.2khz with a regular 1394 firewire port on a Dell laptop? (assuming i have a 7200rpm hard drive) What is the bandwidth limitation of this standard firewire technology and the FireFace 400? Will a 1394b port be required instead?