Nine-pin to six-pin connector FireWire 800/400 cable lets you connect a FireWire 800 device to a FireWire 400 device. It supports all the advantages of FireWire--including simultaneous connection of up to 63 devices real-time digital audio and video transfer peer-to-peer device connections Plug-and-Play device installation and hot swap capability. For apple notebooks and other FireWire devices. Maximizes conductivity. Easy Plug-and-Play installation. Backward compatibility with existing FireWire (IEEE 1394a) devices.