Features: 12Mbps and low-speed 1.5Mbps data transfer rate. Suitable for notebook computer (or contain ExpressCard Slot Computer) Suitable for laptop and desktop with 34mm slot Support USB series specifications (Compatible USB 1.1 Full-Speed / 2.0 High-Speed) Support for Windows 2000/XP/2003/Vista/WIN7/WIN8/WIN10 Features: Express Card Expresscard to USB 3.0 2 Port Adapter Suitable for notebook computer (or contain ExpressCard Slot Computer) 2 USB 3.0 specifications port Suitable for laptop and desktop with 34mm slot Transfer rate 5Gbps Support USB series specifications (Compatible USB 1.1 Full-Speed / 2.0 High-Speed) Support Super-Speed 5Gbps, High-Speed 480Mbps, full-speed 12Mbps and low-speed 1.5Mbps data transfer rate. Support for Windows 2000/XP/2003/Vista/WIN7/WIN8/WIN10 Packing content: 1 x USB3.0 Express Card 34mm Note: 1. The product is not applicable for all series of for Apple laptops. 2. The product is only compatible with port of 34MM. Please pay attention to port specification before purchase (The port specification of express card includes 25MM, 34MM, and 54MM) 3. All laptops with express card port of 34MM can only be used after software driver is installed. As software driver is different for laptops of various brands, thus it is necessary to download the software driver on the official website of the brand.