1,USB 2.0 T-Flash Card Reader 2,Support SD/MMC/SDHC/TF/Micro SD 3,Working temperature: -20 to 65c T-Flash Card Reader with Plug-and-play Function Slim and pocket sizeCompliance with USB 2.0 full-speed, 12Mbps and low-speed 1.5Mbps operationsFor PCs, Notebooks with USB portNo external adapter requiredPlug and Play fuctionPerfect for promotional purpose or as commercial gifts