Extends the profile of the AOOSTAR R1 and R7 2-bay NAS PCs to add a 120mm fan. 

I split off the CPU fan header (with a standard PWM fan splitter) as the chassis header doesn't support PWM and outputs 12v continuously.

Screws into the existing brass inserts used to secure the original bottom of the case. I recommend using 15 or 20mm M3 screws to attach the base. The fan can be screwed in from the top of the base.

Model is directional since the dimensions of the main body aren't square. Use the molded in insert on the bottom to identify the front of the part.