120mm Fan Bracket for Rosewill 4U Chassis

Please note - this only supports one side of the fan (the left when looking at the front of the case).  In my particular case, I was able to rest the other side of my fan on a tall GPU to support it.  If you do not have a GPU (or similar card) in your case to support the opposing side, you may need to modify this bracket / find some other way to hold up the other side of your fan.

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This is a custom fan bracket designed for the Rosewill 4U Server Rackmount Chassis.

It allows you to mount a 120mm fan directly over the PCIe slots at the back left of the case — perfect for cooling an HBA card or other expansion cards that tend to run hot under heavy load. The design repurposes the existing internal brace bracket near the rear of the case. I removed the stock brace on my case, and replaced it with this fan mount, turning it into a dedicated airflow solution without modifying the chassis itself.

- Fits standard 120mm fans
- Aligns with bottom PCIe ports on ATX motherboards
- Tested with PolyLite ASA (heat resistant, server-safe)
- Provides targeted cooling for high-heat PCIe cards (e.g., HBA, RAID, 10GBE, etc)

🔹 Hardware

• 120mm fan (standard 105mm mounting hole spacing)
• Standard fan screws for mounting