You need a common 5.5mm/2.1mm axial connector (center pin positive) for the 12V input.
The consumption through that 12V input connector will of course depend of what you hang off the USB ports and the 12V power ports. The bare minimum needs of the Raspberry Pi 4 by itself can be found here:
https://www.raspberrypi.org/products/raspberry-pi-4-model-b/specifications/
(Be sure to apply a 5V/12V ratio for the actual 12V current, and factor in perhaps a 90%-95% efficiency of the 12V-5V buck converter in the ASIAIR Pro.)
Clear skies,
Chen