1394 key feature: provide bus master function ohci interface specification ieee 1394-1955 compliant ant compatible with proposal 1394A compliant to latest pci specification, pc 12.2&pci power management complication supports serial bus data transfer rates of 100,200 and 400 mbps max63(4pin or 6 pin)computer and consumer device connection real plug and three ieee 1394 root hub ports to desktop over currant protection on each port[support devices:] digital camera,printer,scanner,keyboard,mouse,speaker,modem,usb hub,oame PAB,mp3 player,usb reader,PDA,plotter remocal storage bay[hdd,cdrom,cdrw]etc