US Robotics 2 Port USB 3.0 ExpressCard: * Connect any USB 3.0 device to your computer * Fits in 34mm and 54mm ExpressCard slots * Compatible with USB 3.0 specification * Backwards compatible with USB 2.0/1.1 devices * Transfer rates up to 5Gbps * Up to 10 times faster than USB 2.0 * Each port detects native USB speed and transfers data at the maximum rate for each port * Each port provides up to 900mA of power when plugged into outlet * Ideal for power hungry USB devices * Plug and play * Hot swappable * Add USB 3.0 connections to a desktop that may only have USB 2.0 or 1.1 * Expand USB connections by adding additional USB ports * Connect additional peripherals such as external hard drives, printers, scanners, digital cameras, video cameras, video surveillance cameras, video display solutions, media devices and more