Attractive, Durable Brushed Aluminum Finish beautifully complements Apple systems * Supports most common media card types: CF, SD, SDXC, SDHC, MicroSD, XD, MemoryStick, MMC, M2 * Flashing activity LED indicates file transfer in process * Drastically improved connection speeds compared to older USB 2.0 card readers * USB Bus Powered: no external AC power supply required