Review on 🔌 AuviPal 2-in-1 Powered Micro USB to USB OTG Adapter 90 Degree Right Angled - 2 Pack: Compatible with FireStick, S/NES Classic Mini, Sega Genesis and More by Stanley Redline

Provides power for an external USB device on the go, so that the phone battery is not drained and the phone can access data in the OTG device. It's kind of a single port hub. It also cannot charge your phone due to the way USB 2 works. It can only reduce the power consumption of the phone. This only makes sense for power-hungry peripherals, i.e. cameras, motors, etc. An external power supply is required. The phone's power cords are not connected. An external power supply is not included with these connections.