The BayCooler II features an innovative ventilation system that pushes absorbs a stream of cool air that flows directly above and below your hard drive to keep its temperature low. This is key in reducing the possibility of data loss due to overheating. It's designed for high-performance PCs and servers. Additionally, it's recommended by several major hard drive and system manufacturers because of its effective means of dissipating a significant amount of heat from hard drives. The three high-efficiency, ultra-quiet 40mm cooling fans are rugged and powerful, too!