1.Compliant with USB specification version 1.1/2.0 2.Supporting SD / MMC / RS-MMC / SDHC memory cards,transfer rate up to 480Mbps 3.Can fast look through and edit files directly in the flash disk 4.Easy for carrying, downloading and uploading 5.USB power supported 6.Supports hot swapping 7.LED indicators 8.No Driver Needed for Windows ME/2000/XP/Vista,Mac OS X 9.0 & above, and Linux 2.4 & above 9.Operating temperature: 0~40℃ 10.Stock temperature: -20~60℃