What is the voltage of cooling fan for jetson nx dev kit board

Hi, I am making a radiator for jetson nx dev kit. so I want to know the voltage of cooling fan on Nx

All design related docs are included in DLC. Please find the carrier board (P3509) schematic in DLC for the answer.

I have already read several doc, but didn’ find

I should use 5V or 12V fan ?

The schematic is in the package in DLC as below:
https://developer.nvidia.com/jetson-xavier-nx-developer-kit-carrier-board-design-package-p3509-a01