This OTG Dock for Smartphone and tablets provides a convenient way to access expanded storage on your Android device. The device connects to your Android phone or tablet using the attached Micro B USB cable, opening up access to the 3 onboard USB ports and SD card slot. Now you can connect full-sized SD cards from a camera, USB flash drives or even a portable USB hard drive full of movies or music. This presents an array of potential uses whether for backing up, transferring, editing, sending your photos or simply enjoying some entertainment either at home or on the go. Allows you to even connect a mouse and keyboard to the USB ports and your Android device suddenly becomes a full mobile office. Includes a USB Micro B cable for charging your device.