Dual Slot Design] - This USB SD card reader has Micro SD card slot and SD card slot with USB 2.0 plug, you can easily transfer the files you need or quickly view photos/videos. 3 PACKS FOR YOU - Includes 3 card readers with 480Mbps speed for home use, or you can use one at home and one in the car and office. WIDE COMPATIBILITY] - The memory card reader is compatible with Windows, Mac OS, Linux and Android. Support SD, MMC, SDHC, DV, Micro SD, T-Flash cards. Plug and Play] - Memory card reader for PCs and laptops, no driver is needed to transfer through the SD card reader. What's more, the card reader not only relieves the pressure on your mobile memory, but also allows you to share photos and videos with your family and friends anytime, anywhere. COMPACT & PORTABLE - This USB card reader is lightweight, heat dissipating and durable. The multifunctional card reader is suitable for any device with a USB port.