. This type of cable allows you to connect a USB peripheral to a device that has a Micro USB port, such as a smartphone or tablet.
The Micro USB connector plugs into your mobile device.
The standard USB-A port on the other end allows you to connect devices like a flash drive, mouse, keyboard, or external hard drive.
This adapter essentially turns your mobile device into a USB host, enabling it to read data from or control other USB peripherals.
Some OTG cables also have a separate port for charging the host device while peripherals are connected.