The SATDOCK2520 3.5in SATA Mobile Rack lets you install two 2.5in SATA drives into an available/unused 3.5in floppy drive bay. The mobile rack delivers quick and easy access to hard drive contents using a convenient no mounting required /easy eject feature (much like a tape cartridge or floppy disk) that eliminates the need for the drives to be installed in a tray - a time-saving solution for instant drive removals and insertions as part of a system building process or integration into rackmount systems or industrial environments.