3 x IEEE 1394b 9-pin ports are obtained by plugging into the PCI Express slot of PCs without Firewire connection. Chipset: TI XIO2213BData transfer rate: 100, 200, 400 and 800Mbps It has a 4-pin power connector connection to transfer additional power from the computer's power supply. Plug & Run feature. It can be disassembled and mounted during operation. It can communicate with devices that support FireWire 800 (1394b) technology. For example; external hard disk drives, DV camera, digital camera, CD-RW/DVD-ROM drive etc. Supports Windows 7 / Vista / Server 2003 SP1 or higher versions / XP / 2000 operating systems.