Not sure if this is the correct board but i figured networking is close enough.
I have an RPi 4B, and would like to power it over ethernet cable. I'm also using the 7" touchscreen with the board so i'm concerned with power consumption. I've taken a look at https://www.raspberrypi.org/products/poe-hat/ and was wondering if someone can confirm whether this product also allows you to send data through the same cable. Also, the RPi 4 requires 3a and 5v power, but i've seen some things that say that the PoE Hat doesn't give this - could that be a problem? The cable run itself may be up to 30m long so could i have problems with voltage drops?