Great for connecting MacBook Pro to older video cameras with 4 or 6 pin DV Firewire! IEEE-1394b is the latest in FireWire technology, and our IEEE-1394b or FireWire 800 cable provides transfer speeds up to a blazing 800 Mbps! This is twice the speed of the original 1394 standard, and is a real must-have for transporting and networking multiple types of digital data between users and systems. Digital Video (DV) camcorders, scanners, printers, videoconferencing cameras, and fixed disk drives can all share a common bus connection not only to a PC, but to each other as well.