[3 Pack] eTECH Collection USB 2.0 SD/SDHC Memory Card Reader / Writer -- support SanDisk Kingston 32GB 16GB 8GB 4GB 2GB SDHC, SD, MMC, Ultra SDHC, Extreme SDHC (Card Reader ONLY, NOT for SDXC) (Green) Easy to take, use and install, no additional software installation required. High Speed USB 2.0 interface, backward compatible with USB 1.1. Subject to the speed of memory card itself upto USB2.0 Speed Powers via USB port, no additional power supply needed. 1 year manufacturer warranty