If your drive(s) need added cooling power, or you just want the added security of greater air flow, then this cooling bracket kit is what you''ve been looking for. This Bracket kit allows you to mount any 3.5" Hard Drive into any standard 5.25" Bay, and comes complete with three cooling fans that sit behind a front-grated bezel. A dust filter rests in front of the fans to ensure minimal dust accumulation on your drive. This Cooling Bracket Kit is perfect for those who want the added cooling power of dedicated fans without the expense associated with more expensive removable tray solutions.