About USB OTG
You are far away from a computer but you have your Android phone and you need to transfer some files from a flash drive and upload them to a client immediately. Unfortunately, the mini USB port on your phone is too small for receive the USB flash drive and what you need is a USB OTG cable to link the two devices. A USB OTG adapter cable allows your phone to function as a host for USB devices such as flash drives, keyboards and mice in the same way that your computer acts as the host when you connect these devices to it. Since your smartphone or tablet only has one mini USB port, you can only connect one USB OTG cable to it. However, if you wish to connect multiple USB devices to your mobile device, you need a USB OTG hub. eBay is home to a number of reliable sellers offering such cables, adapters and hubs with convenient shipping options.