1,USB 2.0 SD Card Reader 2,Support SD/MMC/SDHC/TF/Micro SD 3,Working temperature: -20 to 65c ... SD Card Reader, Suitable for PCs, Notebooks and Palmtops Slimmest design, convenient for carryingFully supports SD memory card ... , Notebooks, palmtops, PDAs with USB portReader and writer supports: secure digital card, MMC, mini SD and RS-MMCNo external power required Printed logos are ...