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Add 2 FireWire800 and 1 FireWire400 port to any desktop with a PCI slot. This 3 port PCI IEEE 1394a/b FireWire adapter card turns a PCI slot into two FireWire 800 (IEEE 1394b) ports and one FireWire 400 (IEEE 1394a) port - a cost-effective solution that lets you connect FireWire 800 devices as well as older FireWire 400 devices to your desktop computer.