The Sony Memory Stick Duo & SD USB Card Reader/Writer can read and write images, data, audio and movies from Memory Stick Duo, SD and SDHC cards. Because of the USB 2.0 interface, it is lighting fast. It easily plugs into the USB port on your computer and does not require batteries or AC power, since it draws power right from the USB port. The Reader/Writer is compatible with both Windows and Macintosh Systems without any need for installing drivers or other software.