Features: 1.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. 2.Compatible Devices: PCI Ex1 to IEEE riser card for DV camcorders, hard drives, removable drives, scanners, digital cameras and other FireWire devices 3.3 Ports: The IEEE 1394 riser card has 3 external FireWire(1394a) ports, allowing more 1394a devices to be easily connected to your computer. 4.Transmission Rate: PCI Ex1 to IEEE 1394A riser card adapter supports 400/200/100Mbps data transmission rate. 5.Wide Compatibility: Firewire riser card is compatible with PCI Express version 1.0a, compatible with IEEE 1394 to 1995, 1394a 2000 standards, and compatible with IEEE 1394 OpenHCI V1.0 and V1.1. specification:Item Type: PCI Ex1 to IEEE 1394A Riser Card Adapter Material: PCB Card Slot Type: PCI Ex1 Interface Type: 3 x External 1394A Ports (2 x 6 Pin + 1 x 4 Pin)+1 x Internal 1394A Port (1 x 6 Pin) System Support: for Windows 2000,for xp,for Server 2003,for Vista,for Windows 7,for Windows 8,for Windows 10 32/64 Bit PackageList:1 xPCI Ex1 to IEEE 1394A Riser Card Adapter1 xConnection Cable NoteHot plugging is not supported. Before installation, turn off the power and plug in the power cord.