USB2.0 Version,3port hubs+cardreader CF, CFII, CF Ultrall,MicroDrive, SMC, XD, MinSD, SD, SDC, SD Ultra, MMC,RS-MMC, MMCII, USB2.0 Version,3port hubs+cardreader With 50cm Mini 5Pin Cable Fully Compliat with USB2.0 Specification Backwards Compatible with USB1.1Win98/98SE/2000/ME/XPLinux2.4 or aboveMac OS 8.5 or above COMBO Card reader+ USB HUB