Originally Posted by Jaybee
The easiest way to emulate a USB power supply is with one of these:
1.5V to 5V USB Power Inverter
Even though it says 1.5V, it will actually take anywhere from 1.2V to 4.5V DC and provide a stable 5V DC at 300mA (up to 0.5A max) to a USB port.
Already have emulaters, looking for a USB Monitor Program
to monitor voltage and amperage from-to USB port.
Read my post 4909