This Card adds 3 FireWire 800 ports capable of up to double the transfer-speed efficiency of the original FireWire technology. It provides a seamless connection for DVD, CD-ROM, or external hard drives, and allows you to connect multiple computers and devices simultaneously. The newest IEEE 1394b specification, FireWire 800 provides real-time data-critical for streaming video or audio applications. Features Doubles the transfer-speed efficiency of the original FireWire technology Adds 3 FireWire 800 ports to your computer Provides the fastest transfers for your highest-bandwidth files including video and photographic images Downloads data to external devices at rates up to 800Mbps (95.37 MiBs) Features Plug-and-Play technology for easy install and operation Texas Instruments 1394b Chipset. 64 bit PCI-X also compatible with 32 bit PCI System Requirements: One 32 Bits PCI slot (With additional longitudinal space available for unused 63bit connector) or 64Bit PCI-X For operation at 400Mbps/800Mbps: Windows® XP SP3, Vista or Mac OS® 10.3 or higher.