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