USB2.0 to Express Card adapter allows the use of various Express Cards in 34mm and 54mm (L-shape) standards. Just connect the Adapter's USB connector to a free USB port on your computer or laptop and place the Express Card in the Express Card slot. In this way, you can expand your computer or laptop with new ports (USB, card reader, UMTS, etc.). The device does not need any drivers to operate. Specification: - adapter only for Express Card 34mm and 54mm with USB controller - Express Card UMTS 3G Cards support (3.3v; +1.5V) - USB2.0 specification - data transfer up to 480 Mbps - Hot-Plug, Hot Swap - Adapter for Windows ME/2000/XP, Vista, Mac OS 10.1.3 or higher - Does not require external power supply. It draws current directly from the USB port, up to a maximum of 500mA - cable length approximately 15cm