PC Multimedia Mobility Kit of Sandisk 2GB microSD, SD Adapter, miniSD adapter and Blue microSD TF Card Reader / Writer Package include 4 items: 2GB microSD/TF memory card, SD adapter, miniSD adapter and Blue Color microSD card reader/writer System Requirements - Windows Vista (ReadyBoost not supported), Windows 2000 SP3 and SP4, Windows XP SP1 and SP2, Mac OS 10.2.x and above Card Reader Dimensions - 1.29 x 0.60 x 0.30 (32.89x15.3x7.66mm) Weight - 0.233 ounces (6.5 grams) USB microSD Reader Speed Rating - Up to 13MB per seconds read and up to 3.5MB per seconds