What is the max current that the Orange Pi Plus (or other boards) can output for USB devices?
Assume there is a high quality 3A power supply.
For example, on Raspberry Pi it is documented here:
Note that the output amount is configurable on RPi (you must manually enable 1.2A output) - is there anything similar for OPi?
Here is what needs to be changed in the boot config on an Rpi to change the power from 6mA to 1.2A: