Three external IEEE 1394 (FireWire) ports support DV camcorders, hard disk, removable drives, scanners, printers and other 1394 audio/video devices including TV, VCR, DVD with data transfer rates up to 400Mb/s. Supports both PC and Mac. Works with Sony, Panasonic, Cannon, Sharp, JVC and many other DV camcorders for digital video creating/editing. Pentium or equivalent computer with one available PCI slot. Windows 98SE/ME/2000/XP/Server 2003.