1.Micro SD card reader 2.USB specification Ver2.0 3.Professional factory ... .Drag and drop files between cards TF card reader,Micro SD card reader Feature:USB 2.0 Card readerHigh Speed USB2 ... drop files between cardsUSB specification Ver2.0Support Memory card:Micro SD&T-FlashPlug and play ,high speed data tranferUSB bus power ... /xp/vista,Mac OS9.1 or higher. Egg-Shaped Micro SD Card Reader