Supports many different types of memory cards. Operating System Support: Windows ME/2000/XP/Vista/Window 7/8, Linu/Mac OS X. Internal power connector to ensure USB HUB has sufficient power for external USB devices. Plus 1 x USB 2.0 port. The 6 card reader slots include all formats of the following flash media types: M2, XD, SD/SDHC/SDXC/MMC, Micro SD/SDHC/SDXC (T-flash) CF/MD, MS (Some card may require adapter).