I'm considering Tally lights that can be powered via .5V micro-USB.
When a PTZOptics 20X-NDI camera is running on PoE, does it provide any power on the USB port?
Yup! The USB 2.0 port on the cameras do nothing but provide 5 volts of power for use with external hardware.
Awsome! Thanks. i'm considering using it to power Cubie tally lights.
Does any have experience with that?
I don't have experience with those Tally Lights no, but they look like they just need a 5V power supply so it should work.
How many mA does the USB port deliver? I'm considering to power up a raspberry Pi Zero 2 W with it.
The USB 2.0 output should have up to 5 volts, 1 amp of power available.
I've used this with the RaspberryPi Zero, Blink(1) light and TallyAribiter. Works Great!