- USB 3.0 Super high speed card reader, USB 2.0; 1.0 backwards compatible - Six slots support SDHC/HDXC and various memory cards. - All slots working at same time for data transfer. - LED access indicator. - Hot swappable; Plug & Play. - No external power required; USB bus power. - No driver installation required for Windows/Mac. - No adaptor needed. - High quality rubber coating & Lacquered process surface.