Advance OTG USB allows devices such as tablets or smartphones, to act as a host, enabling other USB devices, such as USB flash drives, digital cameras, mice or keyboards, to be attached to them. Use of USB OTG allows those devices to switch back and forth between the roles of host and device. For instance, a mobile phone may read from removable media as the host device, but present itself as a USB Mass Storage Device when connected to a host computer. Advance USB Flash drive is indispensible for its convenience, speed and easy data transfer between your device, your computer and you other media.