StarTech ECUSB3S254F 2 Port Flush Mount ExpressCard 54mm SuperSpeed USB 3.0 Card Adapter Standards: USB 3.0 Data Rates: 5.0 Gbps USB: 2 x USB 3.0 Interface: ExpressCard slot Temperature: 0°C to 85°C (32°F to 185°F) Dimensions: 2.13 x 2.91 x 0.2 Operating Systems Supported: Windows XP(32/64-bit)/ Server 2003(32/64-bit)/ Vista(32/64-bit)/ Server 2008 R2/ 7(32/64-bit) Parts: 2 Year