Full Duplex Channel: The PCI Ex1 transmission rate of PCI Ex1 to IEEE 1394A riser card adapter is 2.5Gb/s, and it is a full duplex channel. Item Type: PCI Ex1 to IEEE 1394A Riser Card Adapter. 3 Ports: The IEEE 1394 riser card has 3 external FireWire(1394a) ports, allowing more 1394a devices to be easily connected to your computer.
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