The RX-C525 SATA Mobile Rack lets you turn a standard 5.25-inch external desktop drive bay into a removable 3.5-inch hard drive bay. The RX-C525 features a SATA interface to deliver the performance you expect from SATA, SATA II, and SATA III hard drives. This mobile rack supports hot-swap and tool-free HDD installation. It eliminates the need for the drives to be installed in a tray, and delivers quick and easy access to hard drives. The front panel vent design ensures efficient cooling to stabilize your 3.5" drive's performance.