The Hard Drive Rack HDDRACK5 is the latest innovation product for hard drive storage and organization. Each HDDRACK5 unit houses up to five hard drives by using easy to install turnbuckle screws. Designed with a 4.7" cooling fan and a hollow aluminum frame, the HDDRACK5 provides the most efficient heat dissipation. The HDDRACK5 is built with an ON/OFF power switch, which controls the power of hard drives, when a 20-pin or 24-pin ATX power supply is connected. The HDDRACK5 is expandable to 10-bay by stacking an additional unit on top and securing it with a tool-less screw. The ease of use and versatility of the HDDRACK5 makes it an advanced hard drive organizer.