Introducing the FlexCage MB975SP-B, a 5-in-3 Tray-less SATA 6Gbps HDD Cage for 3.5" SATA hard drives. The FlexCage focuses on maximizing storage density, while using the least amount of 5.25" device bays possible. To complement the device, the FlexCage uses features such as: Elegant plug & play Tray-less design, replaceable 80mm 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.