Features : Easy to use, plug and play, No external software and drivers needed. Transfer and backup your files at speeds via USB 3.0 ports, SD Ready The micro SD and SD card slots support nearly all SD card formats. Quick and easy access to photos and other media — perfect for photographers and designers, Perfectly integrated with your Macbook. portable design make it can be carried anywhere and anytime. The product complies with the USB3.0 specification and is backward compatible with the USB 2.0/1.1 standard.