The difference between 4 and 6 pin is that the six pin will carry power. There are some devices such as small hard-drives that can run run from the voltage that this plug provides. Use the i-link cable same thing the different name just dates back to a time were Apple charged a licensing fee for using the name firewire. Gerhard On Jul 9, 2004, at 2:56 PM, Claire Hart wrote: > I just received my powerbook, and began to install FCE. The PDF > "Installing Your Software" recommends that, before you install FCE, > you connect and turn on your video equipment so Final Cut Express can > automatically detect your method of video capture. I got my Sony > miniDV camcorder out and found that its S-video is 4-pin and the > powerbook's S-video is 7-pin. Is my solution as simple as buying an > adaptor such as this one I found through google? > http://www.svideo.com/7pin.html