SD card reader 1,USB 2.0 interface 2,plug and play 3,Lower ... power consumption 4,For SD/MMC/RS-MMC card Name:USB2.0 ... USB 2.0 interface, transfer rate up to 480 Mbps;l Compliant with USB 1.1,USB1.0;l No external power requires,just powered by USB ... to carry ,download and uploadl Standard USB2.0 interface,compatible with USB1.1,USB1.0l ... SD card reader, USB2.0 external card reader