Material: Plastic + 2.0 High Speed Chip Features: Plug and Play, Mini, Portable, USB 2.0 High Speed Dimension: 4.8cm x 2cm x 0.6cm/1.89" x 0.79" x 0.24" (Approx.) Supported operating systems: for Microsoft Windows 8, Windows 7, Vista, Windows XP, Windows ME, Windows 2000 and Windows 98 / 98SE, for Mac OS X.