This triple fan hard drive cooler provides maximum airflow for hot-running hard drives, preventing overheating failures and extending the life of the drive. The fan unit mounts in any free 5.25 inch drive bay, and the hard drive is mounted directly behind it using the supplied 3.5 inch to 5.25 inch adapter brackets; the fans draw fresh external air into the case through a removable, cleanable filter and blows the cooler air over the surface of the hard drive - a cost-effective solution that can help extend the life of hot running 7200 RPM, 10,000, or 15,000 RPM IDE and SCSI hard drives in servers or workstations.