The FOI-1394a provides complete electrical isolation for IEEE 1394a-2000, also trademarked by Apple as FireWire and Sony as i.Link. When connected to another 1394a device, the unit will automatically determine the correct speed and operate at either S100, S200, or S400 rates. Unlike other 1394a devices, the FOI-1394a does not require a device driver to be installed on the operating system because it passes data transparently in the network