smallest readers on the market & unique in its compatibility class (SD/miniSD/MultiMediaCard/RS-MMC/TransFlash), ideal for memory-enabled mobile phone users and photo travel needs. The flash memory cards can be plugged directly into the readers. No card adapters are required. Carry it with you so you always have access to your important data. Extra cap and key ring included Easy to install and use; no additional driver installation required for Windows ME, 2000 and XP. Driver included for Windows 98SE Certified Windows XP and Mac OS X