Title is quite chaotic so let me explain
I have 7 Arctic P14 ARGB fans, and all of them daisy-chained connected to one slot would require 2,8A (per one fan - 0,4A / 5V / 12 LEDs)
My MOBO states, that one (ADD GEN2_X) connector has the max rating of 3,0A / 5V / 500 LEDs
So the LED requirement...