I think it’s a workstation fan on a server board. The CPU is rotated on server boards vs workstations. When the fan matches the board it always blows to the bac

I think it’s a workstation fan on a server board. The CPU is rotated on server boards vs workstations. When the fan matches the board it always blows to the back. RAM modules follow the orientation of the CPU. Parallel to the airflow on server boards, perpendicular on workstation boards.