The Icy Dock MB171SP - B Drive Bay Adapter is an innovative solution for those needing a reliable and efficient way to manage hard drives. This internal adapter features a tray - less design that allows for quick and easy swapping of drives without the hassle of trays. It fits into any standard 5.25" bay and is constructed with a rugged all - metal design, ensuring durability and stability even in demanding environments. The built - in 80mm cooling fan enhances airflow, keeping your drives cool during operation. With features like a drive power button, fan speed control, and optional screw holes for an additional 120mm cooling fan, this mobile rack is perfect for gamers, power users, and applications in medical, military, and industrial settings.