Description:Features:100% brand new and high quality.Express card 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/54mm 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 Microsoft Windows.Specifications:Material: Plastic + MetalColor: Silver (shown as pictures)Size: 75343mm/2.951.340.12in (Approx.)Quantity: 1 Set (other accessories demo in the picture is not included)Note:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage includes:1 X PCI-E To USB 3.0 Express Card Adapter (No retail package)1 X CD Driver