... power consumption 4,For SD/MMC/RS-MMC card Name:USB2.0 SD Card Reader Specification:7.5*3.1*1. ... 480 Mbps;l Compliant with USB 1.1,USB1.0;l No external power requires,just powered by USB interface;l ... RS-MMC Cardl Easy to carry ,download and uploadl Standard USB2.0 interface,compatible with USB1.1,USB1.0l Direct to scan ... insert or pull in heat Best seller SD card reader, USB2.0 external card reader