... 4.Support:SD,M2,TF,MMC usb 2.0 memory card readerSpecification: Support: M2,TF,MINI SD(use adapter),SD,SD-ULTRA II,MMC1 ... readerUp to 480Mbps accessibility speedUSB 2.0 Version specification,and compatible USB 1.1 plug and play, no external power neededsupport windows 98/Me ... *22mmgift packing: 140*100*15mm350PCS/CTNCTN size: 73*45*23cm 2.0 USB Memory Card Reader