The card is suitable for the interface ExpressCard 54 mm.With this USB 3.0 ExpressCard you can provide two additional USB 3.0 ports for your notebook easily and comfortably.Compatible with ExpressCard 54mm SlitzPlag and PlayPower supply: USB power supply, external AC adapterFL1100 chipWith 3 USB 3.0 portstransmission rate up to 5 GbpsSupports USB series (compatible with USB 1.1/ 2.0)1.5/ 12/ 480Mbps, 5Gbps transmission rateExpressCard/ 54 standardSupports Windows XP, Vista and Windows 7Material: Plastic + metalPackage Contents:1 x ExpressCard1 x CDOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.