NOT for supporting any I/O card, Linear Flashcard, Panasonic P2 card, or SRAM card.. Specifications: 1. Support USB 3.0 and USB mass storage device class 2. Compatible with USB 2.0 3. Support Type I/II ATA flash PCMCIA cards(does not support any I/O card, Linear Flash card, Panasonic P2 card, or SRAM card) 4. Support 3.3 V /5V ATA flash card interface 5. Support SD/SDHC/SDXC card up to spec 3.0; capacity up to 2TB 6. Native driver supportedby WIndows 10/8/7/VISTA/XP/2000/ME, MacOS 9.x or above, Linux Kernal 2.4.2 or above, Chrome OS, and any other OS which supports USB 2.0 mass storage device class. 3.3V/5V ATA interface switch settings: The ATA card interface pf the reader supports 3.3V or 5 V, which is determined by the switch on the rear panel. The default setting is 3.3V; if the ATA card can not be identified with 3.3V interface, please switch to 5V and try again. Please be noted that the USB connection should be removed before adjusting the switch.