Affordably upgrade your Mac or PC laptop to fast FireWire 800 connectivity, which offers a rapid maximum interface transfer rate of up to 800Mbits/s. Just plug the card into your computer's ExpressCard 34 or 54 slot and it will provide two external ports for connecting up to two FireWire devices simultaneously. Backward compatible with FireWire 400, it's perfect for connecting your laptop to your favorite peripherals such as LaCie hard disks, CD/DVD drives, cameras, scanners, printers, etc. It's ea y to install and use because it supports hardware hot plugging/unplugging and is plug & play and driver-free. It even comes with an external 12VDC jack for high current consumption devices (12V power supply not included).