The FlexCage focuses on maximizing storage density, while using the least amount of external 5.25" bays possible. To complement the device, the FlexCage uses features such as: elegant Plug-and-Play tray-less design, replaceable cooling fan, 3 speed fan control with Smart Cooling technology, and full control of your drive with individual power buttons. With a large density of drive storage, it can be used in consumer, enthusiast, and system integrator systems that hot swap drives frequently. The FlexCage is compatible with most gaming / media / server computer cases, and it is perfect for file server application such as unRAID, Windows home server and others.