The ADS Dual Link CardBus is a combination FireWire and USB 2.0 CardBus adapter, with two IEEE 1394 FireWire ports (6-pin & 4-pin) and two Hi-Speed USB 2.0 ports Product Features - Add FireWire & USB 2.0 to your notebook with one cardbus card - Two High Speed USB 2.0 Plug and Play Ports - One 6-pin and one 4-pin High Speed FireWire Plug and Play Ports - Transfer Data up to 480 Mbps, USB 2.0; 400 Mbps, FireWire - USB 1.1 backwards compatible Specifications - Type USB / IEEE 1394 PCMCIA Card - Standards USB 2.0 / IEEE 1394 - Data Rates USB2.0: Up to 480 Mbps - FireWire: Up to 400 Mbps - USB 2 x USB 2.0 - 1394 1 x IEEE 1394a - Interface PCMCIA Cardbus Operating Systems Supported Windows 98SE, 2000, ME or Windows XP Mac OS X or above System Requirements IBM-compatible PC/ Power mac or Mac G3/G4 Available Cardbus port