SD/MMC Card Reader , usb 2.0 card reader, USB1.1/2.0 SD/MMC READER1.USB1.1 compatible, USB2.0 compatible,Digital send 160MB/480MB/S.2.Support SD, capability: 4MB-1GB3.Support Windows98, 98SE, 2000, ME, XP, MAC9.0 or above.4.Magnesium Aluminium Alloy shell,mini shape, size only 74mm X 30mm x 11mm5.LED display Power and read