Easy to transfer data files. Transfer data between USB devices like digital cameras, digital audio devices and memory card readers and phone. Access USB flash drives, mouse, keyboard. Compatible with: Samsung Galaxy Series with USB OTG support, Sony Xperia models with USB OTG support,Nokia models with USB OTG support, Motorola models with USB OTG support and HTC models with USB OTG support amongst others. Instructions: Connect the Micro USB into your device's Micro USB port. The device will get automatically detected. Connect your pen drives, USB card readers, hard drives, mouse, keyboard and other compatible devices. If the USB device does not get detected it could be either because your phone does not support or does not have in-built drivers to support the connected USB device. Things you can connect: USB pen-drives, card readers, hard drives (most hard drives require external power support), compatible USB keyboard and mouse, compatible wireless mouse and keyboard with nano receiver. Please note that your device must have in-built drivers support for these devices.