The Lexma USB Card Reader is ideal for the mobile user. Conveniently, it works with many popular memory formats such as SD, Micro SD, Mini SD, MMC, Memory Stick and MS Duo. Use it to transfer pictures from a digital camera to a laptop. Because it is a multi-card reader, it saves space because there is only one device needed. This makes it especially terrific for travel and storage. Each card reader has four sockets for various memory card fits. The USB cable is stored inside the device for efficiency.