Estone USB 2.0 TO ExpressCards 34 54 device Converter Adapter Cable For Laptop PC Driverless (This converter is transparent to operating system. Only the driver for the USB-Based ExpressCard device is required) Compatible with all USB 2.0-Mode Expresscards including many WLAN,WiMAX,3G(HSDPA AND CDMA) and memory, storage media Expresscards. Supports plug & Play and hot-Plug features, allowing you to connect or detach device without the need to switch off the laptop or desktop PC. Supports all USB-based express card\34 or Express card /54 device ( Do not support PCL-Express-Based ExpressCard devices). Optional DC +5V Power jack is also available if extra power is required (AC-to-DC 5V power adapter not included).