Compact design so that it can stay plugged in As large as a euro coin Read speed up to 10 MB/s Write speed up to 3 MB/s Weight: 2 g Dimensions: 17.15×14.85×7.7 mm System requirements: Windows XP, Vista, Windows 7, Windows 8, Mac OS X 10.1 or later, Linux 2.4.0 or later Ideal for netbooks, ultrabooks as well as playback on TVs, media players and car audio devices.