Comes with the USB 2.0 standard, which is fully backward compatible with USB 1.1. Reads and Writes Compact Flash Card (CF), Micro Drive (MD), Smart Media Card (SM), Memory Stick (MS), Secure Digital Card (SD) and MultiMedia Card (MMC). Compatible with Windows 98/98SE/ME/2000/XP, Mac OS 8.6 and above, and Linux kernel 2.4.0 and above.