Features: TI XIO2213AZAY is a multifunctional PCI for Express interface, which is internally connected to a 1394b open source with a three-port 1394b PHY. Open host controller link layer controller. After the TI XIO2213AZAY is properly configured, the solution can provide complete PCI for Express and 1394b functions and performance. Provides three FireWire 800 (1394b) ports for the connection of multiple 1394b devices Built-in 4-pin power connector to provide additional power when connected to the system power supply (recommended) Support hot-plug and plug-and-play connection of peripheral devices Suitable for various types of FireWire 800 (1394b) devices, including portable hard drives, DV camcorders, digital cameras,CD-RW/DVD-ROM drives and other audio/video equipment。 Specifications: Fully for comply with PCI for Express basic specifications, revision 1.1 Chip: TI XIO2213AZAY Type: 3x 1394B Interfaces Size: approx 15x10cm/5.9x3.94in Complies with: PCI for Express Base Specification 1.0a; Support for Windows 2000 / XP / 2003 / Vista / Win 7 / Win 8.x, DOS, Linux; PCI Express-supported system with available PCI for Express slot Package Includes: 1 x PCIE 1394B Controller Card note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.