What Is USB OTG? (And What Is It Used For?)
Is it possible to use your favorite USB devices like mice, keyboards, and thumb drives with your smart phone? Yes, but you'll ...
Hackaday9y
First Raspberry Pi Zero Hack – Piggy-Back WiFi.
He couldn’t bear to disturb the small dimensions of the Pi Zero by using the USB On-the-Go (OTG). The OTG is needed to convert the micro-USB connector on the board to a full USB-A connector.