Tripp Lite"s IEEE-1394b, or FireWire 800 cables, are the latest in FireWire technology, with data transfer speeds up to 800Mbps, twice the speed of original FireWire. The 9-pin to 4-pin FireWire 800 - FireWire cable (also known as a "bilingual" cable) will connect a 4-pin FireWire (1394a) device to a 9-pin FireWire 800 (1394b) port on a computer (FireWire 800 devices can achieve FireWire 800 speeds only when connected to a FireWire 800 port). These cables are 100% compatible with Apple FireWire®, Sony iLink®, and all other IEEE-1394b peripherals. Tripp Lite warrants it"s cables to be free from defects in materials and workmanship for Life.