Did you know there is at least 3 different Firewire Cables and 6 USB types? That's nothing compared to what's available in Video or Audio cabling. Probably one of the handiest web pages available, check out the new B&H Cable Finder WebPage.
This new page makes it much easier to search for the right cable by visually choosing your connections. Search through Audio, Video, Photography, Portable Entertainment, and even Computer cabling. I suggest poking through the website as a reference to see how it's laid out (Click here).
B&H Cable Finder - Choose your Connector