The BPN-DE340HD 12Gb/s tray-less hot-swap hard drive cage features the transfer rate technology of 12 Gb/s and is RAID capable. It also comes with adjustable fan speed and ultra-quiet cooling fans. The LED display features blue light by popular demand. Heat dissipation is enhanced by the full aluminum construction and an 80mm fan. The SATA power connector increases compatibility with most power supplies. The metal key locks help secure your hard drives and prevent unauthorized access. Converting three standard 5.25" drive bays into four usable hard drive slots, it is economically designed to maximize your investment.