This 3 Port PCI Express FireWire adapter card can be installed in a PCI Express slot to add two IEEE1394b (FireWire 800 - 9 pin) ports and one IEEE1394a (FireWire 400 - 6 pin) port providing broad compatibility with a wide range of FireWire devices (e.g. DV camcorders external hard drives digital cameras etc.). The 2b 1a card features a native (single chip) PCI Express chipset - resulting in faster more reliable and cost effective performance than expansion cards that utilize a''bridge'' chip. Add 3 FireWire ports to a standard or small form factor (SFF) computer with support for high-powered FireWire devices. Utilizes a native PCI Express chipset design rather than a bridge chip ensuring a fast reliable and cost-effective FireWire expansion. Two 9-pin FireWire 800 ports each with transfer rates up to 800Mbps. One 6-pin FireWire 400 port each with transfer rates up to 400Mbps. Built with a native PCI Express chipset no bridge chip. Includes low profile.half-height installation bracket. Internal power connector for high powered FireWire devices. Compliant with IEEE 1394b and backwards compatible with IEEE 1394a - 2000 as well as 1394-1995 standards. Plug-and-Play and hot-swap compatible. Add a high speed FireWire port to a desktop without any FireWire ports. Connect a digital camera to a desktop with a PCI Express slot to download photos and video. Connect a high-speed external hard drive to a PCI Express-enabled system. Technical Specifications. Warranty Lifetime. Bus Type PCI Express. External Ports 1 - Firewire 400 (6 pin; IEEE 1394a) Female. External Ports 2 - Firewire 800 (9 pin; IEEE 1394b) Female. Industry Standards IEEE-1394.1394A.1394B. OHCI. PCI 2.2. Interface FireWire 800. Maximum Data Transfer Rate 800000000 Kbits.Sec. Number of Ports 3. Humidity 0 90 percent RH. Operating Temperature 0C to 70C (32F to 158C). Storage Temperature -20C to 90C (-4F to 194C). Chipset ID LSI.Agere FW643. OS Compatibility Windows 98SE. ME. 2000. XP(32.64bit). 2003(32.64bit).