AdvanCED USB 3.0 Multi-Card Reader Maximum Speed up to 5Gigabits/second in USB3.0 mode; backward compatible with USB2.0 Operating Systems Supported include: Windows 7/Vista/XP All 5 slots can be used at the same time  a total of 5 drive icons appear on the screen High quality plastic design  iPod-like plastic feel, Piano-black finish Dimensions: 3.8 x 2.25 x 0.7 inches; 4 ounces