An OTG (On-The-Go) adaptor is a compact and versatile accessory that enables USB devices, such as smartphones and tablets, to act as a host for other USB peripherals. This allows you to connect a variety of USB gadgets, including keyboards, mice, flash drives, and external hard drives, directly to your mobile device. With an OTG adaptor, you can easily transfer files, control your device with external input devices, or expand its storage capabilities, all without needing a computer. These adaptors typically feature a USB Type-A or Type-C connector on one end and a micro-USB or USB-C connector on the other, making them compatible with a wide range of devices.