World's smallest card reader, about one-third size of microSD adapter Support microSD/ TransFlash for SD 1.1 LED indicator for detection of card and data transfer (optional) Carried in the form as keychain, necklace, mobile phone accessory High speed data transfer, up to 12MB/sec (Depend on Flash type of memory card, OS, host device, etc.) Comply with USB 2.0 Compatible with Windows?2000/ME/XP Mac OS?9.2 or higher