3 port USB2.0HUB 1 :CF/MD 2 :MS/MS PRO/MS DUO/ 3 :SD/MMC/RS-MMC,mini sd,micro sd/TF(Adapter),SDHC 4:SM/XD Plug-and-play and hot swapping capability Fast data/file access Transfer rate: up 480Mbps Supports Windows 98, SE, ME, 2000, XP, Vista and Mac 10.4.5 operating systems multi-cardreader