USB SD Card Reader,Truly plug and play, hot swappable Full speed USB V1.1 or V2.0 connectivity Read and write the ... write the flash memory card at 480Mb/Second Compatible with SD, Mini SD, MMC, Truly plug and play, hot swappable USB interface, no external ... 28 x 7mm Colour : blue or you choose AL-SCR21 SD card reader/mmc card reader/card reader