Bus Type: PCIe (2.5 Gbit/sec) Speed: Up to 800 Mbps (IEEE1394b); up to 400 Mbps (IEEE1394a) Card Connectors: 2 x External Fire Wire 800 9 Pin Female Ports; 1 x External Fire Wire 400 6 Pin Port On-board 4 Pin power connector for extra power from system power supply Compatible with Windows 2000/XP/2003 Server/ Vista/ Windows 7/8, Linux & Mac OS 10.2 2 year warranty