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 ... , convenient for carryingFully supports SD memory card reader and writerFor PCs, Notebooks, palmtops, PDAs with USB portReader and writer supports: ... secure digital card, MMC, mini SD and RS-MMCNo external power ...