I plugged it into an Apple 10W USB power adapter I also had handy ... for full-duplex and higher-speed support), 5V power, and ground. Micro-USB connectors add a fifth “ID” pin for OTG support, ...

When a 5V/3A output power adapter is connected to Raspberry Pi 5 and a load is applied to the USB, the output voltage from the USB port decreases and the power output cannot be maintained ...

[Paul] recently purchased an inexpensive USB power pack ... Now you can’t just hook up the 22 ohm resistor to a 5V power supply for the sake of keeping it on — that would draw 1.1watts ...

This handshaking approach supports voltage steps at 5V, 9V, 15V, 20V, and beyond for power outputs ranging from 0.5W to 240W. The newer USB Power Delivery Programmable Power Supply (USB PD PPS ...